00370nam a2200157Ia 450000500170000000800410001704100080005808200100006610000170007624500490009325000060014226400280014830000160017665000060019265500140019820260922095713.0260922s9999    xx            000 0 und d  aind  a500.21 aMudjono, F.X10aBelajar Aktif Ilmu Pengetahuan Alam : Fisika  a1  aJakartabGrasindoc1991  a- hlm.c cm 4a0  aGrade 7-9