Author
United States. Congress. Senate. Committee on Energy and Natural Resources
3 results
Wolfinger, James
3 results
Frye, Bob, 1967-
2 results
Geological Survey (U.S.)
2 results
Merritt, Jane T.
2 results
Omohundro Institute of Early American History & Culture
2 results
Bellis, E. D.
1 results
Chester County Water Resources Authority
1 results
Creighton, Margaret S., 1949-
1 results
D'Angelo, Gino J. (Gino Jude)
1 results
Delaware Geological Survey
1 results
Delaware River Basin Commission
1 results
Delaware. Department of Natural Resources and Environmental Control
1 results
Delaware. Division of Parks and Recreation
1 results
Faill, Rodger T.
1 results
Hayashi, Robert Terry, 1963-
1 results
Kazal, Russell A. (Russell Andrew)
1 results
Pennsylvania State University. Institute for Research on Land and Water Resources
1 results
Pennsylvania. Bureau of State Parks
1 results
Pennsylvania. Bureau of Topographic and Geologic Survey
1 results
Pennsylvania. Department of Environmental Resources
1 results
Reif, Andrew G.
1 results
Sharp, Priscilla Stone
1 results
U.S. Fish and Wildlife Service
1 results
United States. Congress. House. Committee on Resources
1 results
Valentine, Sarah, 1977-
1 results
Wildlife Services (U.S.)
1 results