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	1.	Mica, its occurrence, exploitation, and uses; by Hugh S. de Schmid. by Spence, Hugh S. (Hugh Swaine), 1885- Cirkel, Fritz, 1863-1914. Mica Canada. Mines Branch (1901-1936) Edition: 2d ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Ottawa, Government Printing Bureau, 1912 Availability: No items available. Add to cart (remove)
	2.	Feldspar in Canada, by Hugh S. de Schmid. by Canada. Mines Branch (1901-1936) Spence, Hugh S. (Hugh Swaine), 1885- Material type: Text; Format: print ; Literary form: Not fiction Publication details: Ottawa, Government Printing Bureau, 1916 Availability: No items available. Add to cart (remove)
	3.	Talc and soapstone in Canada, by Hugh S. Spence. by Canada. Mines Branch (1901-1936) Spence, Hugh S. (Hugh Swaine), 1885- Material type: Text; Format: print ; Literary form: Not fiction Publication details: Ottawa, F. A. Acland, printer, 1922 Availability: No items available. Add to cart (remove)

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