Author
Maryland Geological Survey
Andreasen, David C.
13
Curtin, Stephen E.
13
Geological Survey (U.S.)
13
Maryland. Power Plant Topical Research Program
11
Maryland. Department of Natural Resources
8
Staley, Andrew W.
8
Mack, Frederick K.
5
Maryland. Resource Assessment Administration
5
Geological Survey (U.S.),
3