00275nam a2200109Ia 4500008004100000100001900041245001700060250001200077260004300089650001700132700001600149190829s9999||||xx |||||||||||||| ||und||  aVasishtha, A R 0aTrigonometry  a5TH ED.  bKrishna Prakashan MandiraMeerutc1993  aTrigonometry  aSharma, S K