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By "Dyer, William Spafford, (Born - 1894)"
Stratigraphy and paleontology of the Credit River section, accompanied by seven plates, also insert entitled "Composite section of the rocks of the Credit River.
By: Dyer, William Spafford, - Toronto, Ont.
Publication info: [TorontoThe United Press][192-?]
Contributed by: Gerstein - University of Toronto (archive.org)