00000nam a2200000 a 4500 20251203091914.0 003011652X 547.1, D, WEE Weeks, Daniel P. Pushing electrons: a guide for students of organic chemistry 2nd ed. New York Saunders College 1995 xx,163p. 23cm. Lewis structures Resonance structures Mechanisms eng _ 84868 C 56978 56978 0 0 0 0 PU PU 1998-04-09 0 547.1, D, WEE 84868 BK