http://ir.lib.ruh.ac.lk/handle/iruor/7059 2026-04-06T20:54:13Z http://ir.lib.ruh.ac.lk/handle/iruor/19996 TMS2112 - Basic Environmental Science Department of Engineering Technology 2025-06-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/18836 TMS2112 - Basic Environmental Science Department of Engineering Technology 2024-07-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/14246 TMS2112-Basic Environmental Science Department of Engineering Technology 2023-06-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/1379 TMS2112 - Basic Environmental Sciences Department of Engineering Technology 2019-11-01T00:00:00Z