අධ්යාපන විමසුම = aDHYaapana vimasuma: aDHYaapana arDHa vaarshikaya- 20vana kalaapaya:2018 june/december - Maharagama: NIE, 2018. - iv,142p.; 21 cm. ISSN: 2630-7650 Subjects--Topical Terms: Education Dewey Class. No.: 370 / ADH