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An investigation of the coals of Canada with reference to their economic qualities: as conducted at McGill university, Montreal, under the authority of the dominion government...by J.B. Porter...and R.J. Durley...assisted by Théophile C. Denis...Edgar Stansfield...and a staff of special assistants. (Canada. Dept. of mines. Mines branch. [Report no. 83])

An investigation of the coals of Canada with reference to their economic qualities: as conducted at McGill university, Montreal, under the authority of the dominion government...by J.B. Porter...and R.J. Durley...assisted by Théophile C. Denis...Edgar Stansfield...and a staff of special assistants. (Canada. Dept. of mines. Mines branch. [Report no. 83])
Paper図書
Government printing bureau1912-15.<特11-0138>
National Diet Library
  • Author HeadingPorter, John Bonsall, 1861- Durley, Richard John, 1868- Stansfield, Edgar, 1878- Deni...

An investigation of the coals of Canada with reference to their economic qualities: as conducted at McGill university, Montreal, under the authority of the dominion government...by J.B. Porter...and R.J. Durley...assisted by Théophile C. Denis...Edgar Stansfield...and a staff of special assistants. (Canada. Dept. of mines. Mines branch. [Report no. 83])

An investigation of the coals of Canada with reference to their economic qualities: as conducted at McGill university, Montreal, under the authority of the dominion government...by J.B. Porter...and R.J. Durley...assisted by Théophile C. Denis...Edgar Stansfield...and a staff of special assistants. (Canada. Dept. of mines. Mines branch. [Report no. 83])
Paper図書
Government printing bureau1912-15.<210-102>
National Diet Library
  • Author HeadingPorter, John Bonsall, 1861- Durley, Richard John, 1868- Stansfield, Edgar, 1878- Deni...

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