na INLIS000000000003393 20150116123840.0 a ||| | 170609| ||| | $a 997-407-666 $a 0010-011500000001396 $a 501 $a Depdikbud $a lomba penelitian ilmiah remaja 1992 $a 1 $a Jakarta $b Balai pustaka $c 1995 $a 8241/b/2007