00398nam a2200145Ia 4500008004100000020001500041041001200056082001600068100002200084245007100106260003200177300001000209650001400219700001900233221030s9999    xx            000 0 und d  a8125907688  aEnglish  a105.23bGop  aR. Gopalan ( PR ) 0aEngineering Chemistry ( PR )cby R. Gopalan ( PR ), D. Venkappayya  bVikas Pub.aNew Delhic2000  a20.13  aChemistry  aD. Venkappayya