[1]
Abeysinghe, A., Jayatilleke, B., Athapattu, B.C.L. and Gamini, L. 2016. Historical perspectives on costing of ODL courses: re-evaluate the implement at the Open University of Sri Lanka. Advances in Social Sciences Research Journal. 3, 13 (Dec. 2016). DOI:https://doi.org/10.14738/assrj.313.2548.