http://ir.lib.ruh.ac.lk/handle/iruor/7148 2026-04-05T23:11:30Z http://ir.lib.ruh.ac.lk/handle/iruor/19150 BST2212 - Conservation Technologies Department of Biosystems Technology 2024-11-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/16255 BST2212-Conservation technologies Department of Biosystems Technology 2023-11-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/10469 BST2212 - Conservation technologies Department of Biosystems Technology 2020-01-01T00:00:00Z