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Dr. Ir.

Nurzainah Ginting

M.Sc.
Nurzainah Ginting

Dr. Ir. Nurzainah Ginting, M.Sc.

NIP

196302121989102001

NIDN

0012026304

Program Studi
Program Studi S1 Peternakan
Program Studi S2 Peternakan
Bidang Keilmuan
Produksi Ternak
Jabatan
Lektor Kepala
Media Penelitian
Google Scholar Sinta Scopus
Kontak:
E-mail

nurzainah@usu.ac.id, nurzainahginting@gmail.com

Alamat Kantor

Fakultas Pertanian USU

Curriculum Vitae file_download
Publikasi
Publikasi Lainnya

Publikasi Nasional

Organoleptic and Total Plate Count (TPC) Tests of Lanolin Lipstick Made from Sheep Wool with the Addition of Red Dragon Fruit (Hylocereus polyrhizus) Peel Extract

NURZAINAH GINTING , RITA ROSMALA DEWI , DESSE MARTHA PARDOSI

Analysis of the Physicochemical Properties of Lanolin-Based Lipstick from Sheep Wool with Addition of Dragon Fruit Exocarp Extract (Hylocereus polyrhizus)

NURZAINAH GINTING , RITA ROSMALA DEWI , APRIL MESRIANTI SUKATENDEL

The Effect of Addition of Andaliman Fruit (Zanthoxylum acanthopodium dc) on Physical Quality and Organoleptic Testing of Buffalo Meat Sausage

NURZAINAH GINTING , TOMY FIHGTER KARO KARO , FUAD HASAN

The Effect of Storage Duration and Soaking of Eggs Using Basil Leaf Solution (Ocimum basilicum L.) on Maintaining the Internal Quality of Duck Eggs (Anas platyrhynchos domesticus)

NURZAINAH GINTING , YUNILAS , MUHAMMAD UMAR HAKIM , Syaheera N

In Vitro Evaluation of Gambier Leaf Extract (Uncaria gambir Roxb.) from Pangkalan, West Sumatra, as a Natural Feed Additive to Improve Nutrient Digestibility in Ruminants

NURZAINAH GINTING

Nutritional Quality and Total Bacterial Colonies in Goat Milk Yoghurt-Based Ice Cream with the Addition of Salak Pondoh Puree (Salacca Edulis Reinw)

NURZAINAH GINTING , ACHMAD SADELI

Effect of Gelugur (Garcinia atroviridis) Acid Juiceson pHand Organoleptic Test of Quail(Coturnix coturnix japonica) Meat

NURZAINAH GINTING , USMAN BUDI

Exploration of the Potential of Gambir Leaf Extract (Uncaria gambir Roxb.) from Sutera, Pesisir Selatan as a Feed Additive to Improve Fiber Digestibility and Suppress Methane Emissions of Ruminants

NURZAINAH GINTING , RONI PAZLA , ASMUDDIN NATSIR , RAHMAT HIDAYAT , URIP ROSANI

Anthelmintic Activity Test of Young Areca Nut (Arecha catechu L.) Extract Against Fasciola sp. Worm Eggs in Goat Feces In Vivo

NURZAINAH GINTING

Antibacterial Activity of Eco Enzyme and Eco Enzyme with Acorus calamus Stem Against Contaminated Duck Eggs

NURZAINAH GINTING , NUSAIBAH AZZAHIRAH

Optimization of Fiber Digestibility and Methane Reduction with Gambier Leaf Extract from Pangkalan for Sustainable Ruminant Farming

RONI PAZLA , ASMUDDIN NATSIR , RAHMAT HIDAYAT , NURZAINAH GINTING

Effect of Moringa oleifera L. Leaf Solution Concentration and Length of Storage on the Internal Quality of Duck Eggs (Anas platyrhyncos domesticus)

NURZAINAH GINTING

The Effectiveness of Eco Enzymes to Suppress the Development of Sarcoptes scabiei Mites In Vitro

NURZAINAH GINTING

Antibacterial Test of Dadih Against Pathogenic Bacteria and Its Effects on Native Chicken Immunity Organs

YUNILAS , NURZAINAH GINTING

Organoleptic Quality of Goat’s Milk Ice Cream with the Addition of Moringa Leaf Flour (Moringa oleifera)

NURZAINAH GINTING

The Effect of Buffalo Milk Whey on Salmonella Populations in Chickens Infected with Salmonella sp.

NURZAINAH GINTING , MUHAMMAD KHAIRUL ARJUNA

Analysis of Factors Influencing the Spread of Asian Swine Fever (ASF) Disease in Samosir District, North Sumatera Province

NURZAINAH GINTING , ADE TRISNA

Analysis of Factors Influencing Nematode Prevalence in Beef Cattle Faeces at Tanjung Morawa District

NURZAINAH GINTING

Biogas Productivity Using Cow Feces Input and Palm Oil Empty Affluent Soaking Water

NURZAINAH GINTING

Utilization of Biogas Slurry from Cow Faces and Palm Oil Empty Fruit Bunches Soaking Water on Indigofera Zollingeriana Productivity

NURZAINAH GINTING , ACHMAD SADELI , USWATUN HASANAH

Utilization of Biogas Slurry from Cow Faces and Palm Oil Empty Fruit Bunches Soaking Water on Indigofera Zollingeriana Productivity

NURZAINAH GINTING , USWATUN HASANAH , ACHMAD SADELI

Nutrition Content of Murrah Buffalo's Milk Curd By Using Lime Juice (Citrus aurantifolia)

NURZAINAH GINTING

Nutrition Content of Murrah Buffalo's Milk Curd By Using Lime Juice (Citrus aurantifolia)

NURZAINAH GINTING

Effect of Giving Fermented Gold Snail (Pomacea canalicuta L) Flour Using Eco Enzymes on Digestibility of Dry Matter and Organic Matter in Quail

NURZAINAH GINTING , ACHMAD SADELI

Salmonella sp. and Escherichia coli Contamination on Beef from Slaughterhouse and Traditional Markets in Medan City

NURZAINAH GINTING , USWATUN HASANAH

Utilization of Fermented Golden Snail (Pomacea cannaliculata) Flour with Eco Enzymes on Egg Production and Quail Egg Weight

NURZAINAH GINTING

Financial Analysis of the Utilization of Golden Snail Flour (Pomacea canaliculata) With Eco Enzyme Fermentation in Quail Ration

NURZAINAH GINTING

Salmonella sp. and Escherichia coli Contamination on Beef from Slaughterhouse and Traditional Markets in Medan City

NURZAINAH GINTING

Effect Of Fermented Rice Straw With Ecoenzymes On Digestibility of Dry Matter and Organic Matter In Local Sheep

NURZAINAH GINTING

Analysis of resource potential for cattle developing in Serdang Bedagai regency

NURZAINAH GINTING

Eco-enzyme Disinfection in Pig Housing as an Effort to Suppress Esherechia coli Population

HASNUDI , NURZAINAH GINTING , YUNILAS

Eco-enzyme Disinfection in Pig Housing as an Effort to Suppress Esherechia coliPopulation

NURZAINAH GINTING

Effect of Eco Enzymes Dilution on the Growth of Turi Plant (Sesbania grandiflora)

NURZAINAH GINTING

Effect of Fermentation Duration and Dosage of Eco Enzyme Use on Nutrient Content of Kepok Banana Stem (Musa Paradisiaca L.)

NURZAINAH GINTING

The Effect of Sheep Feces Compost with Different Fertilization Doses and Intervals on the Productivity of Mixed Pastures (Clitoria ternatea and Brachiaria ruziziensis)

NURZAINAH GINTING , YUNILAS

Maggot Black Soldier Fly (Hermetia illucens) Nutritional Content Using Various Culture Media

NURZAINAH GINTING

The Effect of Lemon (Citrus limon) as a Coagulant on Fresh Cheese Chemical Composition And Storage

NURZAINAH GINTING

Analysis of Factors Affecting Demand for Cattle Meat in the City of Padang Sidempuan

NURZAINAH GINTING

Coffe Coffee Seed Waste silage technology as goat feed in Tigapanah Sub-district, Karo regency

NURZAINAH GINTING

Quality of Local Rams Meat Given Fermented Cassava Peel-Based Feed Using Local Microorganisms

NURZAINAH GINTING

Papaya Leaf Flour and Turmeric Flour on the Broiler Carcasses

NURZAINAH GINTING

Pengelolaan Ternak Kambing dan Domba

NURZAINAH GINTING

Effect of Fermentation Time and Starbio Bioactivator Type and Local Microorganism (MOL) "Ginta" on the Nutritional Quality of Cassava Tuber Skin (Manhot Utilisimai)

HASNUDI , NURZAINAH GINTING

Analisa Ekonomi Pemanfaatan Sluri Gas Bio Imbangan Kotoran Kambing dan Ampas Tebu terhadap Produktifitas Pastura Campuran

NURZAINAH GINTING

Eat Behavior Muara Goat (Capra aegagrushircus) in the village of Batubinumbun, Muara, North Tapanuli Regency

NURZAINAH GINTING

PERBAIKAN KUALITAS DADIH SUSU KERBAU MURRAH MENGGUNAKAN BAHAN KEMASAN: Improvement of Murrah Buffalo Milk Curd Quality Made by Material Packaging

NURZAINAH GINTING

PENGGUNAAN BUNGKIL INTI SAWIT YANG DIBERI HEMICELL DALAM RANSUM TERHADAP ENERGI METABOLISME RANSUM ITIK RAJA: Utilization of palm kernel cake which is mixed with hemicell in …

NURZAINAH GINTING

PEMANFAATAN GAS BIO SEBAGAI SUMBER ENERGI PANAS DALAM PENETASAN TELUR AYAM KAMPUNG: Utilization of Bio Gas as a Source of Heat Energy for Kampung Chicken Hatching Eggs

NURZAINAH GINTING

Utilization of Bio Slurry with Input of Buffalo Faeces and Water Hyacinth (Eichornia crassipes) With Various Doses of MOD (Microorganism Decomposer) on Productivity of …

NURZAINAH GINTING

PENGARUH CARA PENGOLAHAN TEPUNG IKAN DARI LIMBAH INDUSTRI PENGOLAHAN IKAN NILA TERHADAP ENERGI METABOLISME DAN RETENSI NITROGEN PADA AYAM: Influence Processing Of Tilapia Fish …

NURZAINAH GINTING

Analisis Usaha Pemanfaatan Tepung Ikan Pora-Pora (Mystacoleucus padangensis) Dalam Ransum Terhadap Itik Porsea

NURZAINAH GINTING

Utilization of bio gas slurry and bio gas slurry enriched with goat̢۪ s urine fermented on plant height, leaf production and chemical compositions on Indigofera zollingeriana

NURZAINAH GINTING

ANALISIS USAHA PEMANFAATAN KULIT DAGING BUAH KOPI FERMENTASI DENGAN MIKROORGANISME LOKAL DALAM PAKAN KERBAU MURRAH (Bubalus bubalis) JANTAN LEPAS SAPIH: The Economic Analysis …

NURZAINAH GINTING

PENGARUH RANTAI TATANIAGA TERHADAP EFISIENSI PEMASARAN DAGING SAPI DI KABUPATEN KARO (: The Influence of Chain Efficiency Marketing Beef Cattle in The Karo Regency

NURZAINAH GINTING

THE EFFECT OF USE DIFFERENT LEVEL BUFFALOS FERMENTED COMPOST ON THE PRODUCTIVITY AND QUALITY OF GRASS (PASPALUM CONJUGATUM, BRACHIARIA DECUMBENS, DIGITARIA MILANJIANA)

NURZAINAH GINTING

PEMANFAATAN ENZIM PAPAIN KASAR DALAM UPAYA MENINGKATKAN KUALITAS DAGING KUDA TUA AFKIR DI KABUPATEN HUMBANG HASUNDUTAN: Utilization of Crude Papain Enzyme to Improve Quality …

NURZAINAH GINTING

EFEKTIVITASSKABISIDAEKSTRAKDAUNMIMBA (Azadirachta indicaA. Juss) TERHADAPTUNGAU Sarcoptesscabiei INVITRO: InVitroStudyofScabicideEffectivenessofNeemLeavesExtract …

NURZAINAH GINTING

ANALISIS USAHA PEMANFAATAN BIJI DURIAN SEBAGAI SUSTITUSI JAGUNG TERHADAP AYAM KAMPUNG DI KABUPATEN SERDANG BEDAGAI: Business Analysis Utilization of Durian Seed Flour as …

NURZAINAH GINTING

Utilization of Bio Slurry with Input of Buffalo Faeces and Water Hyacinth (Eichornia crassipes) With Various Doses of MOD (Microorganism Decomposer) on Productivity of …

NURZAINAH GINTING

Pemanfaatan Limbah pemotongan Hewan Yang Berkelanjutan

NURZAINAH GINTING

Response of Fertilization with Goat Urine Fermentation Against the Growth of Leguminosa Indigofera (Indigofera zollingeriana) and Turi (Sesbania grandiflora) as animal feed …

NURZAINAH GINTING

Utilization of Bio Slurry with Input of Buffalo Faeces and Water Hyacinth (Eichornia crassipes) With Various Doses of MOD (Microorganism Decomposer) on Productivity of Daun …

NURZAINAH GINTING

PEMANFAATAN JERAMI PADI FERMENTASI DENGAN PROBIOTIK STARBIO TERHADAP PERTUMBUHAN DOMBA JANTAN LOKAL: Utilization of Rice Straw Fermented by Probiotics Starbio on The Growth of …

NURZAINAH GINTING

PEMANFAATAN TEPUNG IKAN PORA-PORA (Mystacoleucus Padangensis) SEBAGAI SUBSTITUSI TEPUNG IKAN KOMERSIAL DALAM RANSUM TERHADAP PERFORMANS ITIK PORSEA: Utilization of Pora-Pora …

NURZAINAH GINTING

ANALISIS FAKTOR-FAKTOR YANG BERPENGARUH TERHADAP KONSUMSI DAGING AYAM BROILER DI KABUPATEN PADANG LAWAS UTARA: DEMAND ANALYSIS FACTORS OF BROILER CHICKEN MEAT AT PADANG LAWAS …

NURZAINAH GINTING

ESTIMATION OF GENETIC DISTANCE AND THE DISTINGUISHING FACTOR OF THE HORSES IN NORTH SUMATRA THROUGH MORFOMETRIC ANALYSIS

NURZAINAH GINTING

PEMANFAATAN TEPUNG LIMBAH IKAN GABUS PASIR (Butis amboinensis) SEBAGAI PENGGANTI TEPUNG IKAN DALAM RANSUM TERHADAP KARKAS AYAM BROILER: The Utilization of Gabus Pasir Waste …

NURZAINAH GINTING

ANALISIS USAHA PEMANFAATAN TEPUNG IKAN PORA-PORA (Mystacoleucus padangensis) DALAM RANSUM TERHADAP ITIK PORSEA: Economic Analysis of Pora-Pora (Mystacoleucus padangensis) Fish …

NURZAINAH GINTING

Effect of Fermentation Time and Starbio Bioactivator Type and Local Microorganism (MOL) “Ginta” on The Nutritional Quality of Cassava Tuber Skin (Manihot Utilisima)

NURZAINAH GINTING

Pemanfaatan Sluri Gas Bio Campuran Kotoran Kambing dan Ampas Tebu Terhadap Pertumbuhan Pastura Campuran

NURZAINAH GINTING

The Utilization of Fermented Vegetable Waste on Dry Matter and Organic Matter Digestibility on Local Sheep Feed

NURZAINAH GINTING

Publikasi Internasional

The role of dosage and regional origin of Gambir (Uncaria gambir) leaf extract in enhancing rumen fermentation and suppressing methane emissions

NURZAINAH GINTING , RONI PAZLA , ASMUDDIN NATSIR , NOVIRMAN JAMARUN , RAHMAT HIDAYAT , MARDIATI ZAIN , URIP ROSANI , Antonius

Innovative Use of Endogenous Enzymes to Enhance Silage Chemical Quality of Corn Straw for Buffalo (Bubalusbubalis) Feed in Samosir Island

NURZAINAH GINTING

Improving Ruminant Nutrition and Reducing Methane Emissions by adding Gambir Leaf Extract from Maek

NURZAINAH GINTING , RONI PAZLA , ASMUDDIN NATSIR , RAHMAT HIDAYAT

Regional Variation in Antinutrient Content of Gambir ( Uncaria gambir): Implications for Ruminant Feed Efficiency and Methane Reduction

NURZAINAH GINTING , RONI PAZLA , ASMUDDIN NATSIR , RAHMAT HIDAYAT

Enhancing Rumen Efficiency and Reducing Methane Emissions with South Sulawesi Seaweed as Feed Additives

NURZAINAH GINTING , RONI PAZLA , ASMUDDIN NATSIR

Enhancing Rumen Efficiency and Reducing Methane Emissions with South Sulawesi Seaweed as Feed Additives

NURZAINAH GINTING , ASMUDDIN NATSIR , RONI PAZLA , RAHMAT HIDAYAT , ISMARTOYO , SYAKRIANI SYAHRIR

Future of reproductive biotechnologies in water buffalo in Southeast Asian countries

NURZAINAH GINTING

Effects of Breed, Body Condition Score (BCS) and Lactation on Milk Yield in Malaysian Dairy Buffaloes

NURZAINAH GINTING , D A S C Roi , N S Ibrahim

Addition of Weissela confusa To Improve Dadih Quality as Probiotic Food

NURZAINAH GINTING

Methane concentration, ruminal fermentation, digestibility, and microbial protein synthesis of beef cattle with the addition of various types of seaweed from West Java-Banten with different levels in the ration (in vitro)

RAHMAT HIDAYAT , NURZAINAH GINTING , ASMUDDIN NATSIR , RONI PAZLA

Future of reproductive biotechnologies in water buffalo in Southeast Asian countries

NURZAINAH GINTING

Probiotic ice cream from kefir culture with moringa leaves flour addition

NURZAINAH GINTING , LIFIA SUCI JAYANA

Isolation and characterization of chitosan from black soldier fly exuviae

NURZAINAH GINTING

The effect of papaya leaf meal on protein utilisation efficiency in broilers which affects the sustainability of poultry production

RAVEN CHRISTONE , ADE TRISNA , ACHMAD SADELI , NURZAINAH GINTING , USWATUN HASANAH

The effect of papaya leaf meal on protein utilisation efficiency in broilers which affects the sustainability of poultry production

USWATUN HASANAH , ACHMAD SADELI , NURZAINAH GINTING , ADE TRISNA , RAVEN CHRISTONE

The Study of Sustainable Biodesinfectants for Pig Farms in Samosir Island, Indonesia

NURZAINAH GINTING

Activity Test of Binahong Leaf Extract (Anredera cordifolia (Ten.) Steenis) Against the Eggs of Ostertagia sp. In Peranakan Etawa Goats In Vivo

NURZAINAH GINTING , USMAN BUDI

Detection Identification and Evaluation of Cellulase Enzyme Activity of Cellulolytic Fungi from Pliek U as Cellulose Hydrolisis Agent in Feed

NURZAINAH GINTING , YUNILAS

The Use of Fermented White Oyster Mushroom (Pleurotus ostreatus) Baglog Waste (BW) as Forage in Local Goat Feeding.

NURZAINAH GINTING

Dadih bamboo ampel (bambusa vulgaris) and bamboo gombong (gigantochloa verticilata) 2 and 3 days fermented : effect on salad dressing hedonic quality

NURZAINAH GINTING

Effect of incubation time of sago (metroxylon sago) waste by local microorganism "ginta" on ph, crude protein, and crude fiber content

NURZAINAH GINTING

Comparison of isolate dadih with yeast dadih in improving nutrition quality of Cassava Waste (CW)

NURZAINAH GINTING

Bio-Disinfectant: A Suistanable Prevention on One Health Concepts in Indonesia

NURZAINAH GINTING

Biomethanization technology application on slaughterhouse in Indonesia

NURZAINAH GINTING

Dilution of Eco Enzyme and Antimicrobial Activity Against Staphylococcus aureus

HASNUDI , YUNILAS , NURZAINAH GINTING

Effect of Various Doses of Local Microorganism Additives on Silage Physical Quality of Corn (Zea mays L.) Waste

NURZAINAH GINTING

Study on the General Regional Energy Planning of North Sumatra Province, Indonesia in terms of Biogas for Household Energy Demand

AHMAD PERWIRA MULIA TARIGAN , NURZAINAH GINTING

Strategy formulation for increasing customer satisfaction based on service quality gap: a case study of branding coffee shop in Yogyakarta

NURZAINAH GINTING

Study of the forming elements of utopia city in Medan to create a sustainable city (Case study of Medan Johor District)

NURZAINAH GINTING

Dilution of Biogas Bioactivator to enhance microbial growth

HASNUDI , YUNILAS , NURZAINAH GINTING

Effect of lncubation Time of Sago (Metroxylon sago) Waste by Local Microorganism "Ginta" on ph, Crude Protein, and Crude Fiber Conten

NURZAINAH GINTING

Managing Suistanable Universities During Covid-19 Pandemic

NURZAINAH GINTING

The use of cassava peel (Manihot utilissima) fermentation in the ration on the fat of local sheep

NURZAINAH GINTING

Biogas : Alternative energy on supporting environmentally coffee shop in Samosir Island

NURZAINAH GINTING

Biogas: Alternative Energy on Supporting Environmentally Coffe Shop in Samosir island

NURZAINAH GINTING

The Use of Fermented White Oyster Mushroom (Pleurotus ostreatus) Baglog Waste (BW) as Forage in Local Goat Feeding

NURZAINAH GINTING , HAMDAN

Control of Escheichia colii with extract white onion (Allium sativum linn) and ginger (Zingiber officinale roscoe) on chicken carcass

NURZAINAH GINTING , PENI PATRIANI

Biogas Technology on Supporting "Sustainable" Coffee Farmers in North Sumatera Province, Indonesia

NURZAINAH GINTING

Causing factors of declining trend on samosir panorusan goat population as endangered species in Samosir Island

HASNUDI , NURZAINAH GINTING

Biogas slurry application on Sesbania grandiflora: A microbial transportation to improve plant quality

HASNUDI , NURZAINAH GINTING , YUNILAS

Synergism of Cellulotic Bacteria in Consortium as Starter Culture Agent "MOIYL" for Fiber Feed

YUNILAS , TRIWAHYUNI , NURZAINAH GINTING

Biogas slurry application on Sesbania grandiflora: A microbial transportation to improve plant quality

YUNILAS , NURZAINAH GINTING

Palatability test of fermented cassava waste biscuit; enriched with kelor leaf (Moringa oliefera) on dombos sheep

NURZAINAH GINTING

Integration of Kelor (Moringa oleifera) with Coffee Plantation to Fulfill Quality Forage for Livestock in Samosir Island

NURZAINAH GINTING

Non-Carcass Percentage of Local Sheep Fed Fermented Cassava Peel

TRIWAHYUNI , ISKANDAR SEMBIRING , NURZAINAH GINTING

Design of concrete waste basin in Integrated Temporarily Sanitary Landfill (ITSL) in Siosar, Karo Regency, Indonesia on supporting clean environment and sustailable fertilizers for farmers

NURZAINAH GINTING , AHMAD PERWIRA MULIA TARIGAN

The use of cassava peel (manihot utilissima) fermentation in the ration on the fat of local sheep

ISKANDAR SEMBIRING , NURZAINAH GINTING

Sustainable brooder for supporting local chicken in North Sumatera Province, Indonesia

NURZAINAH GINTING

Benefits of using biogas technology in rural area: karo district on supporting local action plan for greenhouse gas emission reduction of North Sumatera Province

NURZAINAH GINTING

Biogas Productivity, Financial Analysis, Livestock Mix Pasture Influenced by Biogas Input and Slurry

NURZAINAH GINTING

Problem Solving on Rabbit Feed Cost and Cacao Plantation in North Sumatera Province By Utilizing Cacao Waste as a SUbstition on Ricebran for Rabbit Ration

NURZAINAH GINTING

Training for Making a Portable Gas Container In Taduken Raga Biogas Group Sinembah Tanjung Muda Hilir Subdistrict Deli Serdang Regency

NURZAINAH GINTING

Design of concrete waste basin in Integrated Temporarily Sanitary Landfill (ITSL) in Siosar, Karo Regency, Indonesia on supporting clean environment and sustainable fertilizers …

NURZAINAH GINTING

Utilization of Bio Slurry with Input of Buffalo Faeces and Water Hyacinth (Eichornia crassipes) With Various Doses of MOD (Microorganism Decomposer) on Productivity of Kelor …

NURZAINAH GINTING

Benefits of using biogas technology in rural area: karo district on supporting local action plan for greenhouse gas emission reduction of north sumatera province 2010–2020

NURZAINAH GINTING

Biogas technology on supporting “sustainable” coffee farmers in North Sumatera Province, Indonesia

NURZAINAH GINTING

Benefits of using biogas technology in agricultural area in supporting organic fertilizer for local farmers in Karo district, North Sumatera Province, Indonesia

NURZAINAH GINTING