000013135
Colquhoun [cartographic material]./ geologically & topographically surveyed by J. G. Easton, Assistant Field Geologist, assisted by D. E. Thomas B.Sc., Assistant Field Geologist and F. Chambers; drawn by A. E. K. 1929
Relief shown by contours.; Includes map of section of Bores with horizontal scale of 40 chains to an inch and vertical 400 feet to an inch.