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- Alberta. Environment Conservation Authority 28
- Alberta. Laws, statutes, etc 24
- Parks Canada 20
- Canada. National and Historic Parks Branch 15
- Baird, David M 14
- Birney, Earle 13
- Putnam, William Lowell 12
- Rebuffat, Gaston 12
- Ford, Theresa M., ed 11
- Metropolitan Museum of Art (New York) 11
- Russell, Andy 11
- Water Survey of Canada 11