Kankanamge, Sugath කථන භාෂා ආබාධ සහ ප්රතිකාර = kathana bhasha abadha saha prethikara - Nikaweratiya: Author, 2002. - 103p.; 22 cm. ISBN: 955-97910-0-1 Subjects--Topical Terms: Special EducationSchool Education Dewey Class. No.: 371.9 / KAN