Author
Geological Survey of Canada
16
Canada. Natural Resources Canada. Mineral and Metals Sector
3
Canada. Energy Sector
2
CANADA DEPARTMENT OF ENERGY, MINES AND RESOURCES
1
Canada. Dept. of Mines and Technical Surveys
1
Canada. Dept. of Mines and Technical Surveys. Mines Branch
1
Canada. Energy, Mines and Resources Canada
1
Canadian Geoscience Council
1
ENERGY, MINES AND RESOURCES CANADA
1
National Energy Board
1
Weeks, Ludlow Jackson, b. 1899
1