00490nam a2200145Ia 450000500170000000800410001708200140005810000170007224501210008926000600021030000250027065000250029594200070032099900170032720240821151646.0240821s9999||||xx |||||||||||||| ||und||  a372.7 ENR  aSurja Kumari 0aEnrichment training course for resource persons in mathematics at upper primary level (held on Sept. 17-21, 1990-91)  aNew DelhibDeptt. of Edu. in Sc. and Math., NCERTc1991  aVarious pagenations   aElementary Education  cBK  c38293d38293