Irish, E.J.W. Halfway River map-area, British Columbia (94 B) / E.J.W. Irish. - Ottawa : Departmentof Energy, Mines and Resources, 1970. - 154 p. : ill., maps (1 in pocket), plates ; 25 cm. - Geological Survey of Canada. Paper ; 69-11 . Includes bibliographical references. Subjects--Topical Terms: Geology -- British Columbia. Gov. Doc. Class. No.: G. CAN E61 (08) 2/69-11