na INLIS000000000001814 0010-0121000180 Prosiding Lokakarya nasional efisiensi pupuk, Cipayung, 6-7 Agustus 1986 Bogor Puslittanak 1986 x, 395 p. ill ; 23 cm 631.8 631.8 PUPUK LOKAKARYA. 2840 2840 2840