De soysa, Priyanga අසීමිත සුවතාවය = asimitha suwathawaya - Kotte: Brilium, 2001. - 152p.; ill.; 22 cm. ISBN: 955-8678-00-7 Subjects--Topical Terms: Education PsychologyEducation Dewey Class. No.: 370.15 / DES