ENT4252 Refrigeration & Air Conditioning http://ir.lib.ruh.ac.lk/handle/iruor/7085 2026-05-03T13:08:19Z ENT4252 - Refrigeration and Air Conditioning http://ir.lib.ruh.ac.lk/handle/iruor/19177 ENT4252 - Refrigeration and Air Conditioning Department of Engineering Technology 2024-12-01T00:00:00Z ENT 4252 - Refrigeration and Air Conditioning http://ir.lib.ruh.ac.lk/handle/iruor/16132 ENT 4252 - Refrigeration and Air Conditioning Department of Engineering Technology 2023-12-01T00:00:00Z