TY - BOOK AU - Wickramasinghe, Daya AU - Rajapaksha, R.M.W. TI - භාෂා උපාර්ජනය SN - 955-9432-05-2 U1 - 401.93 PY - 1999/// CY - Kelaniya PB - Darshaka KW - Language acquistion KW - Language ER -