na INLIS000000000001860 ind 0010-0923000227 Rencana Penelitian Tingkat Peneliti Kegiatan 1990/91 PADI Ir. Z.A. Simanullang, MS. Sukamandi : Balal Penelitian Tanaman Pangan Sukamandi, 1991 236 hlm. 2,8 cm - 633.001.1 BAL r C - Education, extension, and advisory work/Pendidikan, penyuluhan pertanian, dan dokumentasi MFN2129