00283nam a22001217a 4500 541.2254 KUL Kularathne K.W.S. Molecular messes of polymers 46p level 5 PSU 3122 Molecular polymers polymers ousl BK 502 502 0 0 0 NFIC IC IC GEN 2015-04-23 0 541.2254 KUL 005412 2022-11-17 00:00:00 BK