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81.
Catalogue and index of contributions to North American geology, 1732-1891, by Nelson Horatio Darton. by Series: Geological Survey bulletin ; 127.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Gov't print. off., 1896
Availability: No items available.

82.
The later extinct floras of North America. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. print. off., 1898
Availability: No items available.

83.
Sketch of the geology of North Amrica, being the substance of a memoir read before the Ashmolean Society Nov. 26, 1838. By Charles Daubeny. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Oxford, Printed by T. Combe, printer to the University, for the Ashmolean Society, 1839
Availability: No items available.

84.
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86.
Revision of American Paleozoic insects by Anton Handlirsch ... by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Gov't print. off., 1906
Availability: No items available.

87.
The North American continent during Cambrian time / by Charles D. Walcott. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Gov't. print. off., 1892
Availability: No items available.

88.
... Recent earth movement in the Great Lakes region, by Grove Karl Gilbert ... by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Gov't print. off., 1898
Availability: No items available.

89.
Bibliography and index of North American geology, paleontology, petrology, and mineralogy for the years 1901-1905, inclusive, by Fred Boughton Weeks. by Series: U. S. Geological survey. Bulletin ; no. 301
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1906
Availability: No items available.

90.
Geology of North America; with two reports on the prairies of Arkansas and Texas, the Rocky Mountains of New Mexico, and the Sierra Nevada of California, originally made for the United States government. By Jules Marcou ... by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Zurich, New York, Printed for the author, by Zürcher and Furrer; Wiley and Halsted; [etc., etc.] 1858
Availability: No items available.

91.
The geology of the South Mountain belt of Berks County. by Series: Report of progress (Geological Survey of Pennsylvania) ; D3, v. 2, pt. 1.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Harrisburg, Board of Commissioners for the Second Geological Survey, 1883
Availability: No items available.

92.
93.
Essai sur le système silurien de l'Amérique septentrionale. Par F. de Castelnau ... avec vingt-sept planches. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Paris, P. Bertrand; [etc., etc.] 1843
Availability: No items available.

94.
Cenozoic mammal horizons of western North America. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1909
Availability: No items available.

95.
Pre-Cambrian geology of North America. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Govt. Print. Off., 1909
Availability: No items available.

96.
Guide to the genera and classification of the North American Orthoptera found north of Mexico, by Samuel Hubbard Scudder. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Cambridge, E. W. Wheeler, 1897
Availability: No items available.

97.
98.
The deep waterway between the Great Lakes and the Gulf of Mexico. Development of the deep waterway in relation to conservation. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Saint Louis, Mo.] The Lakes-to-the-Gulf deep waterway association, 1911
Availability: No items available.

99.
100.
The middle Triassic marine invertebrate faunas of North America, by James Perrin Smith. by Series: U. S. Geological Survey. Professional paper 83
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1914
Availability: No items available.

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