00431nam a2200169Ia 450000500170000000800410001702000180005804100080007608200090008410000420009324500400013525000060017526400330018130000270021465000060024165500140024720260922095434.0260922s9999    xx            000 0 und d  a979-407-192-7  aind  a500.1 aDepartemen Pendidikan dan Kebudayaan 10aLomba Penelitian Ilmiah Remaja 1986  a4  aJakartabBalai Pustakac1993  a138 hlm.bilus.c21 cm 4a0  aGrade 7-9