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1Published 1958Subjects: “...Geology South America....”
Conference Proceeding Book -
2Published 1956Subjects: “...Petroleum Geology....”
Conference Proceeding Book -
3Published 1952Subjects: “...Geology, Stratigraphic Paleozoic....”
Conference Proceeding Book -
4Published 1960Subjects: “...Geology Congresses....”
Conference Proceeding Book -
5
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6Published 1968Subjects: “...Geology Congresses....”
Conference Proceeding Book -
7
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8Published 1959Subjects: “...Geology, Stratigraphic Cretaceous Congresses....”
Conference Proceeding Book -
9Published 1978Subjects: “...Geology El Salvador Maps....”
Map -
10
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11
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12
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13Published 1966Subjects: “...Geology, Stratigraphic Neogene....”
Conference Proceeding Book -
14by Amstutz, G. C. (Gerhardt Christian), 1922-Subjects: “...Geology, Economic Dictionaries Polyglot....”
Published 1971
Book -
15
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16
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17Published 1975Subjects: “...Geology Dictionaries Polyglot....”
Book -
18
Journal