na INLIS000000000000576 20240611090939 0010-1220000005 ta 240611 0 ind 639.31 639.31 DJA u Djatmika Usaha Budidaya Belut / Djatmika cet.1 Jakarta : CV.Simplex, 1986 36 hlm ; 21 cm belut Kelas 639 00000000827