00313nam a2200121Ia 4500008004100000082002100041100002000062245003200082260003000114300001000144600002000154650001700174140224s9999    xx            000 0 und d  a491.43:620.91 N7  aPrasad, Sukhdev  aOorja sansadanom ki khoj me  aNew DelhibKitabgarc1997  a168p.  a Sukhdev Prasad  aHindi,Energy