Seneviratna, Lal, 1943- Mūlika ārthika praśna. - [1968] - iv, 295 p. 22 cm. In Sinhalese. Includes bibliographical references. LCCN: sa 68017972 Subjects--Geographic Terms: Sri Lanka--Economic conditions.Developing countries--Economic conditions. LC Class. No.: HC424 / .S45