Department of IS http://ir.lib.ruh.ac.lk/handle/iruor/3119 2026-04-28T22:21:11Z IS - 3305 - 2014 June - Society and the Engineer http://ir.lib.ruh.ac.lk/handle/iruor/13892 IS - 3305 - 2014 June - Society and the Engineer IS 2014-06-01T00:00:00Z IS 3231 - 2015 June - Introduction to Astronomy http://ir.lib.ruh.ac.lk/handle/iruor/12425 IS 3231 - 2015 June - Introduction to Astronomy IS 2015-06-01T00:00:00Z