An Investigation of the Coals of Canada: Boiler and gas producer tests John Bonsall Porter Published: 1912 Total Pages: 320 Get eBook
An Investigation of the Coals of Canada John Bonsall Porter Published: 1912 Total Pages: 456 Get eBook
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. In Six Volumes John Bonsall Porter Published: 1912 Total Pages: 760 Get eBook
