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21.
Prospecting in Canada, by officers of the Geological survey, Ottawa. by Series: Canada. Geological survey. Economic geology series ; no. 7
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Ottawa, F. A. Acland, printer, 1930
Availability: No items available.

22.
Microscopic determination of the ore minerals, by M. N. Short. by Series: U. S. Geological survey. Bulletin 825
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, U.S. Govt. Print. Off., 1931
Availability: No items available.

23.
Geology and ore deposits of the Goodsprings quadrangle, Nevada / by D. F. Hewett. by Series: Geological Survey professional paper ; 162.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington : U.S. Gov't. Print. Off., 1931
Availability: No items available.

24.
Geology and ore deposits of the Oatman and Katherine districts, Arizona, by Carl Lausen. by Series: University of Arizona. Geological series ; no. 6. | Bulletin (University of Arizona. State Bureau of Mines) ; no. 131.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Tucson, Published by the University of Arizona, 1931
Availability: No items available.

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Geology and ore deposits of the Pioche district, Nevada / by Lewis G. Westgate and Adolph Knopf. by Series: Geological Survey professional paper ; 171.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington : U.S. Gov't. Print. Off., 1932
Availability: No items available.

27.
Geology and ore deposits of the Stockton and Fairfield quandrangles, Utah / by James Gilluly. by Series: Geological Survey professional paper ; no. 173.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington : U.S. Gov't. Print. Off., 1932
Availability: No items available.

28.
The ore deposits of Socorro County, New Mexico. by Series: Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; no. 8.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Socorro, 1932
Availability: No items available.

29.
Notes on ore deposits at Cave Valley, Patterson District, Lincoln County, Nevada, by F.C. Schrader ... by Series: University of Nevada bulletin ; vol. XXV, no. 3, June 1, 1931
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Reno, Nev., University of Nevada [1931]
Availability: No items available.

30.
Metalliferous deposits of the greater Helena mining region, Montana, by J.T. Pardee and F.C. Schrader. by Series: U.S. Geological survey. Bulletin 842
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, U.S. Govt. Print. Off., 1933
Availability: No items available.

31.
Ore deposits of the Gold Circle Mining District, Elko County, Nevada, by Edward H. Rott, Jr. ... by Series: University of Nevada bulletin ; vol. XXV, no. 5, August 1, 1931
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Reno, Nev., University of Nevada [1931]
Availability: No items available.

32.
Geology and ore deposits of the Elk City, Orogrande, Buffalo Hump, by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, 1934
Availability: No items available.

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The geology and ore deposits of Sierra County, New Mexico. by Series: Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; no. 10.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Socorro, 1934
Availability: No items available.

35.
Geology and ore deposits of the Breckenridge mining district, Colorado / by T.S. Lovering. by Series: Geological Survey professional paper ; 176
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington [D.C.] : U.S. Govt. Print. Off., 1934
Availability: No items available.

36.
The minerals of Franklin and Sterling Hill, Sussex County, New Jersey / by Charles Palache. by Series: Geological Survey professional paper ; no. 180.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington : U.S. Gov't. Print. Off., 1935
Availability: No items available.

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Some facts about ore deposits, by G. Montague Butler. by Series: University of Arizona. Bulletin ; no. 139. | University of Arizona. Geology series ; no. 8. | Bulletin (University of Arizona) ; v. 6, no. 6.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Tucson, Ariz., University of Arizona [1935]
Availability: No items available.

39.
Geology and ore deposits of the Neihart mining district, Cascade county, Montana, by Paul A. Schafer. by Series: Montana. Bureau of mines and geology. Memoir ; no. 13
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Butte, Mont., Montana school of mines, 1935
Availability: No items available.

40.
Étude chalcographique du gisement aurifère de Roşia-Montanǎ et du gisement de plomb et de zinc de Herja (Transylvanie. Roumanie) von Nicolae S. Petrulian. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Bucarest, M. O. Imprimerie nationale, 1934
Dissertation note: Inaug.-diss.--Basel.
Availability: No items available.

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