IPB University Scientific Repository collects, disseminates, and provides persistent and reliable access to the research and scholarship of faculty, staff, and students at IPB University
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Analisis alokasi waktu mencari nafkah dan pendapatan keluarga petani, penyadap karet rakyat (Desa Purbatua, Kecamatan Pembantu Purbatua, Kabupaten Tapanuli Utara, Sumatera Utara
