Rathnapala, Nandasena සමාජ විද්යාවේ මූලධර්ම = samaaja vidhyaave mulaDHarama - Colombo: Lake House, 1986. - 210p.; 21 cm. ISBN: 955-552-006-2 Subjects--Topical Terms: Sociology Dewey Class. No.: 301 / RAT