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By "Lawson, Andrew C. (Andrew Cowper), 1861-1952"
The geology of Steeprock Lake, Ontario / by Andrew C. Lawson. Notes on fossils from limestone of Steeprock Lake, Ontario / by Charles D. Walcott.
By: Lawson, Andrew C. - Walcott, Charles D.
Publication info: Ottawa :Canada Dept. of Mines, Geological Survey Branch,1912.
Contributed by: Gerstein - University of Toronto (archive.org)