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- Alberta. Environment Conservation Authority 21
- Engler, Bruno 15
- Alberta. Laws, statutes, etc 8
- Nelson, James Gordon 4
- Bow Valley Naturalists 3
- Keller, W. Phillip 3
- Parks Canada. Western Region 3
- Russell, Andy 3
- Aemmer, Rudolf 2
- Alberta. Public Advisory Committee on Environmental Education 2
- Alpine Club of Canada 2
- British Columbia. Environment and Land Use Committee 2