00297nam a2200121Ia 4500008004100000100003000041245002600071250000900097260001400106260003500120260000900155300001100164221231s9999    xx            000 0 und d  aJain . P.C., Monika jain. 0aEngineering chemistry  a15th  aNew Delhi  bDhanpat rai publishing company  c2010  a1288 p