00319nam a2200145 4500 8122405509 541.223 KAL Kalsi,P.S Stereochemistry conformation and mechanism 2nd India Wiley 1990 507p stereochemistry REF 955 955 1 0 0 NFIC IC IC GEN 2015-06-07 0 541.223 KAL 001518 2015-06-07 00:00:00 2015-06-07 REF