More about Fritz Cirkel:
| | Books by Fritz Cirkel: Books in the extended shelves: Cirkel, Fritz, 1863-1914: Asbestos its occurence, exploitation and uses ([s.n.], 1905), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Asbestos, its occurrence, exploitation and uses (Ottawa, 1905), also by Canada. Mines Branch (1901-1936) (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Chrysotile-asbestos, its occurreance, exploitation, milling, and uses. (Government printing bureau, 1910), also by Canada. Mines branch (1901-1936) (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Chrysotile-asbestos its occurrence, exploitation, milling and uses (Govt. Print. Bureau, 1910), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Graphite : its properties, occurrence, refining and uses (Dept. of Mines, Mines Branch, 1907), also by Canada. Mines Branch (1901-1936) (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Graphite its properties, occurrence, refining and uses ([s.n.], 1907), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Graphite propriétés, gisements, traitements, et usages ([s.n.], 1912), also by Canada. Division des mines (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Mica its occurence, exploitation and uses ([s.n.], 1905), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Mica, its occurrence, exploitation and uses (Ottawa, Canada, 1905), also by Canada. Department of the Interior. Mining lands branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Mica, its occurrence, exploitation, and uses (Government Printing Bureau, 1912), also by Hugh S. Spence and Canada. Mines Branch (1901-1936) (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Rapport sur les dépôts de fer chromé des cantons de l'est de la province de Quebec (Division des mines, 1912), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Report on the chrome iron ore deposits in the eastern townships, province of Quebec (Government printing bureau, 1909), also by Canada Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Report on the chrome iron ore deposits in the Eastern Townships, province of Quebec (Govt. Print. Bureau, 1909), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Report on the iron ore deposits along the Ottawa (Quebec side) and Gatineau Rivers (Government Printing Bureau, 1909), also by Canada. Mines Branch (page images at HathiTrust) Cirkel, Fritz, 1863-1914: Report on the iron ore deposits along the Ottawa (Quebec side) and Gatineau rivers (Govt. Print. Bureau, 1909), also by Canada. Mines Branch (page images at HathiTrust)
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