Ariyadasa, K.D. In-service training of teachers in Sri Lanka - Unesco Paris 1976 - 56p - In-service Training Sri Lanka - Experiments and innovations in education No.23 . ISBN: 92-3-101347-5 Nat. Bib. No.: 1862 Nat. Bib. Agency Control No.: 371.27(548.7)ARI Subjects--Topical Terms: Education Universal Decimal Class. No.: 371.27(548.7) 1