Harkin, D. A. The Rungwe volcanics at the Nothern end of Lake Nyasa / D. A. Har kin. - Dar es salaam: Government Printer, 1960. - 171 p. : ill. ; 25 cm. - Geological Survey of Tanganyika Memoir ; no.II . Includes bibliographical references. Subjects--Topical Terms: Geology -- Tanzania. Petrology -- Tanzania. Gov. Doc. Class. No.: G EAT C621 (08) 3/2