Mackay, B. R. 4 Geological Survey of Canada 2 Bell, Robert, 1841-1917 1 Bell, W. A. 1 Bell, W. A. 1889-1947 1 Brown, Richard 1 Canada. Department of Mines and Technical Survey 1 Canada. Dept. of Mines 1 Canada. Mines and Geology Branch. Bureau of Geology and Topography 1 Canada. Mines, Forests and Scientific Services Branch 1 Canada. Royal Commission on Coal (1946) 1 Copeland, Murray John, 1928- 1 Hayes, Albert Orion 1 Hudson, Joseph G. S. 1 International Geological Congress 1 MacKay, B.R. Poole, Henry S. 1