00298nam a2200121Ia 4500008004100000100001900041245003200060260003900092300000900131650001400140942000700154999001500161190216s9999||||xx |||||||||||||| ||und||  aRoanld Breslow 0aOrganic Reaction Mechanisms  bWa Benjamin International Coc1969  a272p  aChemistry  cBK  c2396d2396