00447     2200157   4500001002100000005001700021006001900038008004100057035002500098084001400123100002600137245006800163260001900231650002100250990001800271INLIS00000000000346820150422101827.0a           ||| | 170609|                      ||| |        a0010-011500000001471  a530 RED a0 aEditor: redaksi arema00aapa dan mengapa ?b200 tanya jawab mengenai Bumi & Alam semesta  aJakartabArena 0apengetahuan Alam  a2430/bel/2002