Ratnapāla, Nandasēna. Drug and narcotic dependence in Sri Lanka / eng Nandasena Ratnapala. - 1st ed. - Nugegoda, Sri Lanka : Nandasena Ratnapala, 1986. - 368 p. : map ; 21 cm. Bibliography: p. 350-368. LCCN: Subjects--Topical Terms: Drug abuse--Sri Lanka.Drug addiction--Sri Lanka. Dewey Class. No.: 362.293095493 / RAT