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The coal resources of the world ; Vol. 1
McInnes, William (contributor); Dowling, D. B. (contributor) - 1913
Persistent link: https://www.econbiz.de/10000378030
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Coal Fields of Manitoba, Saskatchewan, Alberta
Dowling, D. B. - 1914 - Rev. ed.
Persistent link: https://www.econbiz.de/10000379873
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Coal Fields and Coal Resources of Canada
Dowling, D. B. - 1915
Persistent link: https://www.econbiz.de/10000379875
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The coal resources of the world ; Vol. 2
McInnes, William (contributor); Dowling, D. B. (contributor) - 1913
Persistent link: https://www.econbiz.de/10000663186
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The coal resources of the world ; Vol. 3
McInnes, William (contributor); Dowling, D. B. (contributor) - 1913
Persistent link: https://www.econbiz.de/10000663188