00557nam a22001937a 4500 116998 116997 OSt 20260706113007.0 201125b ||||| |||| 00| 0 eng d 9789386418524 547 KAL Kalsi,P S 297 Organic reactions stereochemistry & mechanism; Through solved problems by Kalsi P S and R S Oza 5 Newdelhi New age 2019 714 Elimination reaction Hetrocyclic chemistry Nitrenes R S Oza 710 ddc BK