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1
Harrisburg, PA : Distributed by Field Conference of Pennsylvania Geologists c/o Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1981

Government Document Conference Proceeding Book
2
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
3
[Harrisburg] : Pennsylvania Geological Survey, 1959

Government Document Conference Proceeding Book
4
Denver, Colo. : U.S. Geological Survey, 1985

Government Document Conference Proceeding Book
5
by Irwin, W. P. (William Porter), 1919-2012
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1997

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Government Document Conference Proceeding Book
6
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
7
Albany : New York State Museum, State Education Dept., 2007

Government Document Conference Proceeding Book
8
Houston, Tex. : [Springfield, Va. : National Aeronautics and Space Administration, Lyndon B. Johnson Space Center : Lunary and Planetary Institute, Universities Space Research Association ; National Technical Information Service, distributor, 1992

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Government Document Conference Proceeding Book
9
Albany, N.Y. : University of the State of New York, State Education Dept., New York State Museum, 1998

Government Document Conference Proceeding Book
10
Albany, N.Y. : University of the State of New York, State Education Dept., New York State Museum, 1998

Government Document Conference Proceeding Book
11
Washington : U.S. G.P.O., 1989

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Government Document Conference Proceeding Book
12
[Harrisburg, Pa.] : [Conference] : Distributed by Bureau of Topographic and Geologic Survey, Dept. of Environmental Resources, 1974

Government Document Conference Proceeding Book
13
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1970

Government Document Conference Proceeding Book
14
[Washington, DC] : [Springfield, Va.] : National Aeronautics and Space Administration ; [National Technical Information Service, distributor], 1991

Government Document Conference Proceeding Book
15
Houston, TX : [Washington, DC] : [Springfield, Va.] : Lunar and Planetary Institute ; [National Aeronautics and Space Administration] ; [National Technical Information Service, distributor], 1993

Government Document Conference Proceeding Book
16
by Longwell, Chester R. (Chester Ray), 1887-
Washington U.S. Govt. Print. Off., 1933

Government Document Conference Proceeding Book
17
Houston, Tex. : [Springfield, Va.] : The Institute ; [National Technical Information Service, distributor], 1997

Government Document Conference Proceeding Book
18
Reston, Va. : U.S. Geological Survey, 1989

Government Document Conference Proceeding Map
19
Houston, Tex. : [Springfield, Va.] : National Aeronautics and Space Administration, Lyndon B. Johnson Space Center : Lunar and Planetary Institute, Universities Space Research Association ; [National Technical Information Service, distributor], 1988

Government Document Conference Proceeding Book
20
Houston, Tex. : Lunar and Planetary Institute, 1988

Government Document Conference Proceeding Book