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by Zacher, Susan M.
Harrisburg, [Pa.] : Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission, 1994
2nd ed.
Harrisburg, [Pa.] : Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission, 1994
2nd ed.
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24
Washington, D.C. (800 Independence Ave., S.W., Washington 20591) : U.S. Dept. of Transportation, Federal Aviation Administration, 1994
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25
26
by Niemiller, Marvin K
Washington : Springfield, Va. : Dept. of Transportation, Coast Guard, Office of Research and Development ; for sale by the National Technical Information Service, 1976
Washington : Springfield, Va. : Dept. of Transportation, Coast Guard, Office of Research and Development ; for sale by the National Technical Information Service, 1976
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27
Washington, D.C. : U.S. Congress, Office of Technology Assessment : for sale by Supt. of Docs., U.S. Govt. Print. Off., 1975
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28
by Thompson, J. W.
[Washington, D.C.] : [U.S. Dept. of Interior, Bureau of Mines], 1919
[Washington, D.C.] : [U.S. Dept. of Interior, Bureau of Mines], 1919
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29
by Kennedy, John H.
Washington, D.C. : U.S. Dept. of Transportation, Office of Research and Development, Implementation Division, 1980
Washington, D.C. : U.S. Dept. of Transportation, Office of Research and Development, Implementation Division, 1980
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30
by Fieldner, Arno Carl, 1881-1966
Washington, U.S. Govt. Print. Off., 1935
Washington, U.S. Govt. Print. Off., 1935
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31
[Washington, D.C.] : Dept. of the Treasury, Internal Revenue Service, 1996
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32
33
[Washington, D.C.?] : Dept. of the Treasury, Internal Revenue Service, 1990
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34
[Vicksburg, Miss.?] : U.S. Army Engineer Waterways Experiment Station, 1979
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35
by Dutton, E. J.
[Boulder, Colo.] U.S. Dept. of Commerce, Office of Telecommunications, Institute for Telecommunication Sciences, 1971
[Boulder, Colo.] U.S. Dept. of Commerce, Office of Telecommunications, Institute for Telecommunication Sciences, 1971
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36
Cincinnati, Ohio : National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2002
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37
by Aresco, S. J., Haller, C. P., Abernethy, R. F. (Roy Franklin), 1905-1990
[Washington, D.C.] : United States Department of the Interior, Bureau of Mines, 1958
[Washington, D.C.] : United States Department of the Interior, Bureau of Mines, 1958
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38
39
40
by Powell, R. B.
Washington : Springfield, Va., ; Dept. of Transportation, Federal Railroad Administration, Office of Research and Development ; for sale by the National Technical Information Service, 1976
Washington : Springfield, Va., ; Dept. of Transportation, Federal Railroad Administration, Office of Research and Development ; for sale by the National Technical Information Service, 1976
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