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Amos Henry Worthen

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Economical Geology Of Illinois
Economical Geology of Illinois
Economical Geology of Illinois
Geology and Palaeontology (Classic Reprint)
Economical Geology of Illinois Volume 2
Economical Geology Of Illinois V3 (1882)
Economical Geology of Illinois Vol. 3
Economical Geology Of Illinois V2 (1882)
Economical Geology of Illinois Vol. 2
Economical Geology of Illinois Vol. 1
Geological Survey of Illinois, Vol. 5 Geology and Paleontology (Classic Reprint)
Geological Survey of Illinois. A. H. Worthen, Director. Volume III. (Italian Edition)
Geological Survey of Illinois, Vol. 5 Geology and Paleontology (Classic Reprint)
Economical Geology of Illinois, Vol. 3 Reprinted from the Original Reports of the Geological Survey, with Additions and Emendations; Published by Authority of the Legislature of Illinois, 1882 (Classic Reprint)
Geological Survey of Illinois; Volume 4

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