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  1. 1
    Lewis and Clark expedition : Lemhi County, Idaho.
    Published 1998
    Government Document Book
  2. 2
    A history of polar exploration /
    by Mountfield, David, 1938-
    Published 1974
    Government Document Book
  3. 3
    Explorer on the northern plains : Lieutenant Gouverneur K. Warren's Preliminary report of explorations in Nebraska and Dakota, in the years 1855-'56-'57 /
    Government Document Book
  4. 4
    Facts about the United States Antarctic Research Program.
    Published 1982
    Government Document Book
  5. 5
    Exploring the American West, 1803-1879 /
    Published 1982
    Government Document Book
  6. 6
    History of botanical exploration in Territorio Federal Amazonas, Venezuela /
    by Huber, Otto, 1944-
    Published 1984
    Government Document Book
  7. 7
    Facts about the U.S. Antarctic Program.
    Published 1988
    Government Document Book
  8. 8
    Hubble Space Telescope (HST).
    Published 1991
    Government Document Photo
  9. 9
    Seeds of change : a quincentennial commemoration /
    Published 1991
    Government Document Book
  10. 10
    History basic data : Redwood National Park, DelNorte and Humboldt Counties, California /
    by Bearss, Edwin C.
    Published 1982
    Government Document Book
  11. 11
    Keys to the encounter : a Library of Congress resource guide for the study of the Age of Discovery /
    by De Vorsey, Louis
    Published 1992
    Government Document Book
  12. 12
    1492, an ongoing voyage /
    Published 1992
    Government Document Book
  13. 13
    East Base Historic Monument, Stonington Island/Antarctic Peninsula.
    by Spude, Catherine Holder
    Published 1993
    Government Document Book
  14. 14
    John Wesley Powell's exploration of the Colorado River.
    by Rabbitt, Mary C.
    Published 1995
    Government Document Book
  15. 15
    North American exploration /
    Published 1997
    Government Document Book
  16. 16
    Yellowstone National Park : its exploration and establishment /
    Government Document Book
  17. 17
    The 1994 Arctic Ocean section : the first major scientific crossing of the Arctic Ocean /
    Published 1996
    Get full text
    Government Document Book
  18. 18
    Exploring nature's sanctuary : Captain William Ludlow's report of a reconnaissance from Carroll, Montana Territory, on the upper Missouri to the Yellowstone National Park, and return made in the summer of 1875 /
    by Ludlow, William, 1843-1901
    Published 1985
    Government Document Book
  19. 19
    Bristol Bay, Alaska : from the hinterlands to tidewater : a grassroots pictorial, 1885-1965 /
    by Branson, John B.
    Published 1998
    Government Document Book
  20. 20
    Reports of explorations and surveys to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean /
    Published 1855
    Government Document Book
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