The coal resources of the world: an inquiry made upon the initiative of the Executive committee of the XII International geological Congress, Canada, 1913, with the assistance of geological surveys and mining geologists of different countries. Edited by William McInnes ... D.D. Dowling ... and W.W. Leach
International Geological Congress (12th : 1913 : Toronto, Ont.); McInnes, William, 1858-1925