00415nam a2200145Ia 450000500170000000800410001708200120005810000580007024500680012826000270019630000100022365000120023394200070024599900170025220240821151458.0240821s9999||||xx |||||||||||||| ||und||  a530 NAT  aNational Council of Educational Research and Training 0aPhysics: teaching materials for class VI (experimental edition)  aNew DelhibNCERTc1966  a169p.  aPhysics  cBK  c26651d26651