An Introduction to sociology / editor, Gehan Wijeyewardene. Wijeyewardene, Gehan. Lembaga Gerakan Pelajaran Dewasa. Sociology. HM51 .I56 311 SHI Includes bibliographies. Singapore : Lembaga Gerakan Pelajaran Dewasa, [1964] [1964] 1964 Text 58 p. ; eng Radio talks ; ser. 1