Showing 1 - 20 results of 62 for search '', query time: 0.21s Refine Results
  1. 1
    Environmental setting of the Yellowstone River Basin, Montana, North Dakota, and Wyoming /
    Published 1999
    Government Document Book
  2. 2
    Relation of fish community composition to environmental factors and land use in part of the upper Mississippi River basin, 1995-97 /
    Published 1999
    Government Document Book
  3. 3
    The environment of south Florida : a summary report /
    Government Document Book
  4. 4
    The biology of Salt Wells Creek and its tributaries, southwestern Wyoming /
    by Engelke, Morris J.
    Published 1979
    Government Document Book
  5. 5
    Factor analysis of the chemistry of Spanish moss /
    by Connor, Jon J. (Jerome J.)
    Published 1984
    Government Document Book
  6. 6
    Ecology and distribution of major diatom ecotypes in the southern Fort Union Coal Region of Montana /
    by Bahls, Loren L.
    Published 1984
    Government Document Book
  7. 7
    The response of vegetation to disturbance in Death Valley National Monument, California /
    by Webb, Robert H.
    Published 1988
    Government Document Book
  8. 8
    Phytoplankton dynamics of the fresh, tidal Potomac River, Maryland, for the summers of 1979 to 1981 : a water-quality study of the tidal Potomac River and estuary /
    by Cohen, Ronald R. H.
    Published 1988
    Government Document Book
  9. 9
    Hydrology and ecology of the Apalachicola River, Florida : a summary of the river quality assessment /
    by Elder, John F.
    Published 1988
    Government Document Book
  10. 10
    Fishes in the forested flood plain of the Ochlockonee River, Florida, during flood and drought conditions /
    by Leitman, Helen M.
    Published 1991
    Government Document Book
  11. 11
    Geoscience investigations that emphasize chemical, physical, and biological ecosystem processes /
    Published 1990
    Government Document Conference Proceeding Microform Book
  12. 12
    Ecoregions of Alaska.
    Published 1995
    Government Document Book
  13. 13
    Ecoregions of Alaska.
    Published 1995
    Government Document Microform Book
  14. 14
    Conversion of environmental data to a digital-spatial database, Puget Sound area, Washington.
    by Uhrich, Mark A.
    Published 1997
    Government Document Microform Book
  15. 15
    Ecoregions of Tennessee /
    Published 1998
    Government Document Map
  16. 16
    Ecoregions of Indiana and Ohio /
    Published 1998
    Government Document Map
  17. 17
    Comparison of U.S. Geological Survey and Ohio Environmental Protection Agency fish-collection methods using the index of biotic integrity and modified index of well-being, 1996-97 /
    by Covert, S. Alex
    Published 2001
    Government Document Book
  18. 18
    Ecoregions of Idaho /
    Published 2002
    Government Document Map
  19. 19
    Ecoregions of Alabama and Georgia /
    Published 2002
    Government Document Map
  20. 20
    Ecoregions of Iowa and Missouri /
    Published 2002
    Map
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