00431nam a2200169Ia 450000500170000000800410001702000180005804100080007608200090008410000420009324500400013525000060017526400330018130000270021465000060024165500140024720260922095447.0260922s9999    xx            000 0 und d  a997-407-666-x  aind  a500.1 aDepartemen Pendidikan dan Kebudayaan 10aLomba Penelitian Ilmiah remaja 1992  a1  aJakartabBalai Pustakac1995  a190 hlm.bilus.c21 cm 4a0  aGrade 7-9