00342nam a2200145Ia 4500008004100000020001500041041001200056082001100068100001600079245002200095260004900117300000800166650000700174700001500181221030s9999    xx            000 0 und d  a8122420613  aEnglish  a105.23  aB. R. Gupta 0aEnergy Conversion  bNew  Age International Pub.aNew Delhic2007  a575  aEE  aV. Singhal