00377nam a2200145 a 450000500170000000800410001704100080005808200100006610000200007624500510009626400370014730000110018465000220019565000140021720260717090937.0260717s1977    ii            000 0 eng d  aeng04a547.21 aBresbus, Ronald10aOrganic reaction mechanisms /cBresbus, Ronald 1aLondon :bW. A. Benjamin,c1977.  a972 p. 4aOrganic chemistry 4aChemistry