Author
Geological Survey (U.S.)
586 results
Chester County Water Resources Authority
60 results
Sloto, Ronald A.
55 results
United States. Environmental Protection Agency
46 results
Pennsylvania. Bureau of Topographic and Geologic Survey
45 results
Pennsylvania. Department of Environmental Protection
44 results
Senior, Lisa A.
30 results
Pennsylvania. Department of Environmental Resources
25 results
Reed, Lloyd A.
25 results
Conger, Randall W.
21 results
Wood, Gordon H. (Gordon Harry), 1919-
21 results
Susquehanna River Basin Commission
19 results
Reif, Andrew G.
17 results
Schreffler, Curtis L.
17 results
Wood, Charles R.
16 results
Drake, Avery Ala, 1927-
15 results
Barker, James L., 1936-
14 results
Epstein, Jack Burton, 1935-
14 results
Koerkle, Edward H.
14 results
Pennsylvania. Department of Internal Affairs
14 results
Fishel, David K.
13 results
Langland, Michael J.
13 results
Pomeroy, John S., 1929-
13 results
Philadelphia (Pa.). Water Department
12 results
Schweinfurth, Stanley P.
12 results
Galeone, Daniel G.
11 results
Hainly, Robert A.
11 results
Low, Dennis J. (Dennis James)
11 results
McManus, B. Craig
11 results
Pennsylvania. Department of Transportation
11 results
United States. National Park Service
11 results
Chester County (Pa.). Health Department
10 results
Geological Survey (U.S.). Water Resources Division
10 results
Risser, Dennis W.
10 results
United States. Army. Corps of Engineers
10 results
Witt, Emitt C.
10 results
Delaware River Basin Commission
9 results
Goode, Daniel J.
9 results
Stuckey, Marla H.
9 results
Bird, Philip H.
8 results
Brightbill, Robin A.
8 results
Kent, Bion H. (Bion Huntley), 1925-
8 results
National Water-Quality Assessment Program (U.S.)
8 results
Pennsylvania. Bureau of Land and Water Conservation
8 results
Pennsylvania. Bureau of Mining and Reclamation
8 results
Sams, James I.
8 results
Trexler, J. Peter, 1926-
8 results
Wetzel, Kim L.
8 results
Bilger, Michael D.
7 results
Chaplin, Jeffrey J.
7 results
more…