carbon tracer carbonyl carbonylate anion carbonylation reaction carbonyl bond carbonyl compound carbonyl group carbonyl halide carbonyl hydride carborane carborane anion carborund carborundum carborundum detector carborundum disk carbothioic acid carbothiolic acid carbothionic acid carboxide carboxyethyl |
carbon tracer белязан въглерод Търсената дума е намерена |