00305nam a2200121Ia 450000500170000000800410001704100080005808200130006610000160007924500410009526000380013630000090017420260720174815.0260720s2014    xx            000 0 und d  aeng  a530 BISM  aBiswait Ray  aModern Methods of Teaching Chemistry  aNew DelhibA P H PUBLISHINGc2014  a232p