QE1 .G2176 no. 14
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Devonian ammonoids of America / |
1 |
QE1 .G2176 no. 15
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Cambrian system (restricted) of the southern Appalachians / |
1 |
QE1 .G2176 no. 15-16
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Cambrian system (restricted) of the southern Appalachians / |
1 |
QE1 .G2176 no. 16
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Lower Cretaceous deposits in California and Oregon / |
1 |
QE1 .G2176 no. 17
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Pennsylvanian correlations in the eastern interior and Appalachian coal fields / |
1 |
QE1 .G2176 no. 17-18
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Pennsylvanian correlations in the eastern interior and Appalachian coal fields / |
1 |
QE1 .G2176 no. 18
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Cambrian stratigraphy and trilobites of northwestern Montana / |
1 |
QE1 .G2176 no. 19
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Cambrian Merostomata / |
1 |
QE1 .G2176 no. 19-20
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Cambrian Merostomata / |
1 |
QE1 .G2176 no. 20
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Geology along the southern margin of the Absaroka range, Wyoming. |
1 |
QE1 .G2176 no. 21
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Paleontology and stratigraphy of the Silurian rocks of the Port Daniel-Black cape region, Gaspé. / |
1 |
QE1 .G2176 no. 21-22
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Paleontology and stratigraphy of the Silurian rocks of the Port Daniel-Black cape region, Gaspé. / |
1 |
QE1 .G2176 no. 22
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Lower Mississippian rocks of the east-central interior / |
1 |
QE1 .G2176 no. 23
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Bibliographic index of North American Devonian Cephalopoda / |
1 |
QE1 .G2176 no. 23-24
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Bibliographic index of North American Devonian Cephalopoda / |
1 |
QE1 .G2176 no. 24
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Contributions to a knowledge of the lead and zinc deposits of the Mississippi Valley region / |
1 |
QE1 .G2176 no. 25
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Devonian stratigraphy and paleontology of the Roberts Mountains region, Nevada / |
1 |
QE1 .G2176 no. 25-26
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Devonian stratigraphy and paleontology of the Roberts Mountains region, Nevada / |
1 |
QE1 .G2176 no. 26
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Permian ammonoids of the Guadalupe mountain region and adjacent areas / |
1 |
QE1 .G2176 no. 28
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Review of the Pelycosauria / |
1 |