Title: Laporan pelaksanaan percobaan lapang dan survai wilayah Kebun Percobaan Batang Kwis, Dati II Deli Serdang, Dati I Sumatra Utara
Description: Field experiments and evaluation of productivity of an experimental garden in Batang Kwis, Kabupaten Deli Serdang, Propinsi Sumatera Utara; research report.