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21
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22Published 1991“...U.S. Geological Survey :...”
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23by Evarts, Russell C.“...U.S. Geological Survey,...”
Published 1991
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24by Jones, M. A. (Myrtle Anne), 1952-“...U.S. Geological Survey ;...”
Published 1991
Government Document Microform Book -
25by Driedger, Carolyn L.“...U.S. Geological Survey ;...”
Published 1991
Government Document Microform Book -
26Published 1991“...U.S. Geological Survey :...”
Government Document Microform Book -
27Published 1991“...U.S. Geological Survey :...”
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28Published 1991“...U.S. Geological Survey :...”
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29Published 1992“...U.S. Geological Survey :...”
Government Document Microform Map -
30by Scott, Kevin M., 1935-“...U.S. Geological Survey ;...”
Published 1992
Government Document Microform Book -
31by Arattano, M. (Massimo)“...U.S. Geological Survey :...”
Published 1992
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32
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33by Drzymkowski, Robert E.“...U.S. Geological Survey ;...”
Published 1992
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34Published 1992“...U.S. Geological Survey ;...”
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35Estimated average annual ground-water pumpage in the Portland Basin, Oregon and Washington 1987-88 /by Collins, C. A.“...U.S. Geological Survey ;...”
Published 1994
Government Document Book -
36by Stanley, W. D. (William Dal), 1939-“...U.S. Geological Survey :...”
Published 1994
Government Document Microform Book -
37by Krimmel, Robert M.“...U.S. Geological Survey ;...”
Published 1994
Government Document Microform Book -
38Published 1994“...U.S. Geological Survey ;...”
Government Document Microform Book -
39Published 1995“...U.S. Geological Survey ;...”
Government Document Book -
40Published 1996“...U.S. Geological Survey,...”
Government Document Book