प्रस्तावित विषय : खोज निहित
प्रस्तावित विषय : खोज निहित
Geology, Stratigraphic
366
Geology
277
Pennsylvanian Geologic Period
155
Paleontology
143
Stratigraphie
104
Paleobotany
56
Géologie
47
अधिक ...
1
2
द्वारा Tuttle, M. L., Klett, T. R. (Timothy R.), Richardson, Mark, Breit, George N.
Washington, D.C. : U.S. G.P.O., 1996
Washington, D.C. : U.S. G.P.O., 1996
सरकारी दस्तावेज
पुस्तक
3
द्वारा Stark, James R.
Lansing, Mich. : U.S. Dept. of the Interior, Geological Survey, 1980
Lansing, Mich. : U.S. Dept. of the Interior, Geological Survey, 1980
सरकारी दस्तावेज
पुस्तक
4
5
6
7
8
9
11
द्वारा McKee, Edwin D. (Edwin Dinwiddie), 1906-1984
Washington : U.S. Govt. Print. Off., 1975
Washington : U.S. Govt. Print. Off., 1975
सरकारी दस्तावेज
पुस्तक
12
द्वारा McKee, Edwin D. (Edwin Dinwiddie), 1906-1984
[Reston, Va.?] : Washington, D.C. : U.S. Dept. of the Interior, Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1982
[Reston, Va.?] : Washington, D.C. : U.S. Dept. of the Interior, Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1982
सरकारी दस्तावेज
पुस्तक
13
द्वारा Berryhill, Henry L., Jr. (Henry Lee), 1921-2013
Washington, U.S. Dept. of the Interior, U.S. Govt. Print. Off., 1971
Washington, U.S. Dept. of the Interior, U.S. Govt. Print. Off., 1971
सरकारी दस्तावेज
पुस्तक
14
द्वारा Mitchum, Robert Mitchell
1954
1954
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थीसिस
पुस्तक
15
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19
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