na INLIS000000000025693 Ind 0010-1218007531 Perencanaan latihan pegawai pertanian di Sumatera Utara NASUTION, Idar E.S. Idar E.S. Nasution Bogor Deptan 1979 40 p. : ill. ; 28 cm. 40 p. : ill. ; 28 cm. 373.68NASp 373.68 AGRICULTURAL WORKERS TRAINING 565/D/80-mfn27548