http://ir.lib.ruh.ac.lk/handle/iruor/7079 2026-04-05T23:11:29Z http://ir.lib.ruh.ac.lk/handle/iruor/20051 ENT4162 - Polymer Materials Department of Engineering Technology 2025-06-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/18849 ENT4162 - Polymer Materials Department of Engineering Technology 2024-05-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/14242 ENT4162 - Polymer Materials Department of Engineering Technology 2023-06-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/1467 ENT4162 - Polymer Materials Department of Engineering Technology 2020-12-01T00:00:00Z