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- J.B. Harkin [commissioner] 2
- Ayre, Robert 1
- Burpee, Lawrence Johnston 1
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- Canadian National Railways 1
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- Groves, Naomi Jackson 1
- Kindle, E.M 1
- MacGregor, James G 1
- McMaster University (Hamilton, Ontario). Dept. of Geography. Karst Research Group 1
- Phillips, Alan 1
- Reader's Digest 1