1.Sustainable management of smallholder oil palm farming during the COVID-19 pandemic

作　　者：H L Nainggolan ;W S S Waruwu ;C K Gulo 等

出　　处：IOP Conference Series: Earth and Environmental Science. 2021 ;892(1).doi:10.1088/1755-1315/892/1/012064

出版社：IOP Publishing

文章 ID：1036300522

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2.Utilization and cultivation opportunities of pelawan ( Tristaniopsis merguensis Griff.) as a biomas energy source in Southern Sumatera

作　　者：H Siahaan ;A Sumadi ;Purwanto

出　　处：IOP Conference Series: Earth and Environmental Science. 2020 ;415(1).doi:10.1088/1755-1315/415/1/012009

出版社：IOP Publishing

文章 ID：1031416726

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3.The meaning of Nglungsur ritual in term of hermeneutic perspective

作　　者：Sugiyanto ;H Siahaan ;N Anoegrajekti

出　　处：IOP Conference Series: Earth and Environmental Science. 2021 ;747(1).doi:10.1088/1755-1315/747/1/012076

出版社：IOP Publishing

文章 ID：1032580515

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4.Analysis of effect of production factors on the production and income of coffee farmers using Beauveria bassiana in Siborongborong Subdistrict

作　　者：T M H Siahaan ;T Supriana ;Iskandarini

出　　处：IOP Conference Series: Earth and Environmental Science. 2021 ;782(2).doi:10.1088/1755-1315/782/2/022058

出版社：IOP Publishing

文章 ID：1032583769

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5.Bagworm infestation on Shorea balangeran in the degraded peatland restoration plot

作　　者：Asmaliyah ;E E W Hadi ;R S B Irianto 等

出　　处：IOP Conference Series: Earth and Environmental Science. 2020 ;533(1).doi:10.1088/1755-1315/533/1/012041

出版社：IOP Publishing

文章 ID：1031366807

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