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41.
A report on the economic geology of the Silverton quadrangle, Colorado / by Frederick Leslie Ransome. by Series: United States. Bulletin ; 182.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1901
Availability: No items available.

42.
Geology of the Aspen mining district, Colorado, with atlas. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1898
Availability: No items available.

43.
... Geology of the Boulder district, Colorado, by N. M. Fenneman. by Series: U.S. Geological survey. Bulletin ; no. 265
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1905
Availability: No items available.

44.
Geology and mining industries of the Cripple Creek district, Colorado, by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1895
Availability: No items available.

45.
The underflow of the South Platte valley, by Charles S. Slichter and Henry C. Wolff. by Series: U.S. Geological survey. Water-supply and irrigation paper ; no. 184 | K, Pumping water, O, Underground waters ; 13;
Material type: Text Text; Format: print available online remote; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1906
Online resources:
Availability: No items available.

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Geology of the Rangely oil district, Rio Blanco County, Colorado, with a section on the water supply, by Hoyt S. Gale. by Series: U.S. Geological survey. Bulletin 350
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1908
Availability: No items available.

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Reconnaissance of the Book cliffs coal field between Grand river, Colorado and Sunnyside, Utah, by G. B. Richardson. by Series: United States. Geological survey. Bulletin ; 371
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1909
Availability: No items available.

51.
Ground waters of the Indio region, California, with a sketch of the Colorado desert. by Series: Water-supply paper (Washington, D.C.) ; no. 225.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1909
Availability: No items available.

52.
... The Devonian fauna of the Ouray limestone, by E. M. Kindle ... by Series: U.S. Geological survey. Bulletin 391
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1909
Availability: No items available.

53.
Coal fields of northwestern Colorado and northeastern Utah, by Hoyt S. Gale. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1910
Availability: No items available.

54.
A preliminary report on the geology of the Monarch mining district, Chaffee County, Colorado, by R. D. Crawford. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Denver, Colo., The Smith-Brooks printing company, state printers , 1910]
Availability: No items available.

55.
Geology and ore deposits near Lake City, Colorado, by John Duer Irving and Howland Bancroft. by Series: U.S. Geological survey. Bulletin 478
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1911
Availability: No items available.

56.
Coal fields of Grand Mesa and the West Elk Mountains, Colorado, by Willis T. Lee. by Series: U.S. Geological survey. Bulletin 510
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Government print. off., 1912
Availability: No items available.

57.
Common minerals and rocks, their occurrence and uses, by R. D. George. by Series: Colorado. Geological survey. Bulletin 6
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Denver, Col., The Smith-Brooks printing co., 1913
Availability: No items available.

58.
Geology and ore deposits of the Monarch and Tomichi districts, Colorado, by R. D. Crawford. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Denver, Col., The Smith-Brooks printing co., 1913]
Availability: No items available.

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