00323nam a2200133Ia 4500008004100000020001800041082001000059082001000069100001700079245005100096260001400147260001900161260000900180230118s9999||||xx |||||||||||||| ||und||  a81-250-1106-4  a547.2  bSYK/A  apeterbsykes 2aa guide book to mechanism in organic chemistry  abangalore  borient longman  c1982