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Author/Creator
- Canada. Environment Canada29
- Canada. Mines Branch (1901-1936)21
- ebrary, Inc15
- Canada14
- Canada. Environmental Protection Service14
- Canada. Energy, Mines and Resources Canada12
- Canada. Mines Branch12
- Canada. Dept. of Energy, Mines and Resources10
- Canada. National Energy Board9
- Geological Survey of Canada9
- Science Council of Canada9
- Adams, Leon David, 1905-7
- Canada. Air Pollution Control Directorate7
- Canadian Institute of Mining and Metallurgy7
- Canadian Society of Petroleum Geologists7
- Project Muse7
- Statistics Canada. Energy Section7
- Statistics Canada. Manufacturing and Primary Industries Division7
- Atomic Energy of Canada Limited6
- Canada Centre for Mineral and Energy Technology6