00421ca0 a2200157ua 450000500170000000800410001702000150005804000090007304100080008208200130009010000210010324500600012425000100018426000550019465000140024920180509134918.0051216s2005           g     b000 u eng u  a8186299939  aMAIN1 aeng14a547bCHO1 aChattopadhyay, P10aReactions mechanisms & problems In organic chemistry /   a3rd /  aNew Delhi :bAsian books private limited , c2005. 0aChemistry