Rupasinghe, S අධ්යාපන විද්යා පර්යේෂණ = aDHyaapana vidyaa paryeSHana - Colombo: Godage, 2004. - 134p.; 22 cm. ISBN: 955-20-7462-2 Subjects--Topical Terms: Education ResearchEducation Dewey Class. No.: 370.78 / RUP