TY - BOOK AU - Samaradivakara, Senewirathna B. TI - Usas vibhaga sandaha bhugola vidyava saha A. Po. Sa. samanya pela vibagaya 9, 10 sreni sandaha samaja adyanaya U1 - 915.493 PY - 1980/// CY - Kurunegala PB - Sarasavi Vidyalaya KW - Social Sciences KW - Geogaphy N1 - Text in sinhala ER -