na INLIS000000000009850 20140204092350.0 a ||| | 170530| ||| | $a 979-002-515-8 $a 0010-021400000000262 $a 639.31 $a 23 $a 639.31 SAR b C.4 $a B. Sarwono $a Budi Daya Belut dan Sidat $a ke-1 $a Jakarta $b PT. Penebar Swadaya $c 2011 $a ARPUS KAB. Magetan $a 49.810-0