na INLIS000000000003383 20150116123743.0 a ||| | 170609| ||| | $a 979-407-665-1 $a 0010-011500000001386 $a 501 $a Indonesia $a Lomba penelitian ilmiah remaja 1991 $a 1 $a Jakarta $b Balai pustaka $c 1995 $a Depdikbud $a Balai pustaka $a 5866/bpu/2000