00406nam a22001337i 4500001001000000005001700010008004100027082002600068100001600094245004100110260004600151300001700197650005800214SXC02003620260819093657.0260101s1993    ii            000 0 eng d  aSPC 001.076 RAV-N222  aRavi Chopra10aNDA and naval academy /cRavi Chopra  abGalgotia Publications, New Delhi,c1993  ap. ;c22 cm. 0aCompetitive exams study materials; Study and teaching