Jurnal Penelitian dan Kajian Ilmiah MIPA text io| Yogyakarta FMIPA-UAD 2002 2004 monographic 6 bulan sekali 2002-06-01 nd IND 29,5 cm e-mail : forummipa@telkom.net A410 A420 A100 500.2 1412-4211 080919 44557