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21
Washington, DC : American Chemical Society, 1971

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Conference Proceeding Book
22
Pretoria, Wallachs' Ltd., printers 1929

Conference Proceeding Book
23
Harrisburg : Bureau of Topographic and Geologic Survey, 1984

Conference Proceeding Book
25
[Harrisburg] : Pennsylvania Geological Survey, 1959

Conference Proceeding Book
26
Tulsa, Okla. : Society of Economic Paleontologists and Mineralogists, 1986

Conference Proceeding Book
28
Falls Church, Va. : American Society of Photogrammetry, 1983

Conference Proceeding Book
29
Washington, D.C. : Denver, CO : U.S. G.P.O. ; Free on application to Book and Open-File Report Sales, U.S. Geological Survey, 1992

Government Document Conference Proceeding Book
30
[Harrisburg] : Pennsylvania Geological Survey, 1959

Government Document Conference Proceeding Book
31
Denver, Colo. : U.S. Geological Survey, 1985

Government Document Conference Proceeding Book
32
Harrisburg : Bureau of Topographic and Geologic Survey, 1981

Conference Proceeding Book
33
by Irwin, W. P. (William Porter), 1919-2012
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1997

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Government Document Conference Proceeding Book
34

Conference Proceeding
35
Washington, D. C., American Geological Institute, 1966

Conference Proceeding Book
36
[Washington] American Geophysical Union of the National Academy of Sciences-National Research Council, 1962

Conference Proceeding Book
37
London, Institute of British Geographers, 1972

Conference Proceeding Book
38
St. John's, Nfld. : Geological Association of Canada, 1991

Conference Proceeding Book
39
Harrisburg, PA : distributed by Field Conference of Pennsylvania Geologists, Inc. c/o Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1988

Conference Proceeding Book
40
[Paris] Éditions Technip, 1960

Conference Proceeding Book