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Author
- Geological Survey of Canada4
- American Geographical Society of New York3
- Hume, G. S. (George Sherwood), 1893-3
- Stewart, J. S. (James Smith), b. 18812
- Beach, H. H. (Hugh Hamilton), 1909-1
- Bostock, H. S. (Hugh Samuel), 1901-1
- Crickmay, C. H. (Colin Hayter), 1899-1
- France. Service de la carte géologique de la France, issuing body1
- Geological Survey (U. S.)1
- Hanson, Gilbert N.1
- Jolliffe, A. W.1
- Lord, C. S.1
- Shaw, G.1
- Wickenden, R. T. D.1
- Wilson, A. E.1
- Wilson, J. T.1
