Author
ProQuest (Firm)
57 results
Geological Survey (U.S.)
38 results
NetLibrary, Inc
35 results
United States. National Park Service
24 results
United States. Congress. House. Committee on Rivers and Harbors
22 results
Virginia. Department of Environmental Quality
16 results
International Geological Congress
15 results
American Geophysical Union
14 results
Grew, Theophilus, -1759
12 results
United States. Bureau of the Census
12 results
Gale (Firm)
10 results
Grover, Nathan Clifford, 1868-1956
9 results
Hampton Roads Planning District Commission (Va.)
9 results
United States. Congress. House. Committee on Public Works
9 results
United States. War Department
9 results
Thornberry, Trista L.
7 results
United States. Department of the Army
7 results
United States. Forest Service. Southern Research Station
7 results
Virginia. Department of Transportation
7 results
Austin, Samuel H.
6 results
Hyer, Kenneth E. (Kenneth Edward)
6 results
McFarland, E. Randolph
6 results
Moyer, Douglas L.
6 results
National Water-Quality Assessment Program (U.S.)
6 results
Stevens, Guy C. (Guy Clarke), 1879-
6 results
Force, Eric R.
5 results
Nelms, David L.
5 results
Smith, John, 1580-1631
5 results
Smithsonian Institution
5 results
T. T.
5 results
U.S. Fish and Wildlife Service
5 results
United States. Congress. House. Committee on Armed Services. Subcommittee on Military Personnel
5 results
United States. Congress. Joint Committee on Printing
5 results
Virginia. Department of Conservation and Recreation
5 results
Becker, Charles W.
4 results
Brockman, Allen R. (Allen Richard), 1961-
4 results
Burton, William C. (William Chapin), 1952-
4 results
Dixon, John, -1791
4 results
Duke, Daniel Linden
4 results
Hack, John T. (John Tilton), 1913-1991
4 results
Hall, Warren E. (Warren Esterly), 1881-
4 results
Herz, Norman, 1923-
4 results
McCoy, Kurt J.
4 results
Pavlides, Louis, 1921-
4 results
Powars, David S.
4 results
Richardson, Donna L.
4 results
Smith, Barry S.
4 results
Speiran, Gary K.
4 results
Sullivan, Timothy J. (Timothy Joseph), 1950-
4 results
United States. Bureau of Mines
4 results
more…