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Author
- Ontario Geological Survey.9
- Ontario. Department of Mines.7
- Clemons, Russell E.6
- Geological Survey of Canada.4
- Anderson, Orin J.3
- Ontario. Division of Mines.3
- Alavi, Mehdi.2
- Florida Geological Survey.2
- Geological Survey (South Africa)2
- Ontario. Department of Mines and Northern Affairs.2
- Ontario. Geological Branch.2
- Seager, William R.2
- Siragusa, G. M.2
- Wilson, John J., author.2
- African Geological Surveys.1
- Amukun, S. E.1
- Annells, R. N.1
- Argentina. Servicio Geológico Minero Argentino, compiler, cartographer, issuing body.1
- Asociación de Servicios Geológicos y Mineros de Iberoamérica.1
- Atlantic Geoscience Society, issuing body.1