00275nam a2200109Ia 4500008004100000041000800041082002200049100001000071245005000081260002600131300000800157211209s1981    xx            000 0 und d  aeng  a547.2 N75 SYK/PET  aSYKES  aGUIDE BOOK TO MECHANISM IN ORGANIC CHEMISTRY   aLONDONbLONGMANc1981  a374