00338nam a2200121Ia 4500 220204s9999 xx 000 0 und d 678-477 RIN-B1 Cotter, Robert J Ring forming polymerizations. Pt B1. Heterocyclic rings New York Academic 1972 Matzner, Markus BK 24797 24797 0 0 0 0 MAIN MAIN 2021-12-16 38.00 0 678-477 RIN-B1 05468 2021-12-16 00:00:00 2022-02-14 BK