Gajanayake, Jaya ප්රජා සංවර්ධන ව්යාපෘති = praja Sanvardhana Viyapruthi - Colombo : Praja Sanwardana Ha Vadihiti Adyapana sangamaya 1990. - 79p.; ill.; 23cm ISBN: 9559089005 Subjects--Topical Terms: Community DeverlopmentSocial Processes Dewey Class. No.: 361.8 / GAJ