Cecil, L.D., Smith, R.C. II, Reilly, M.A., and Rose, A.W., 1987, Radium-228 and radium-226 in
ground water of the Chickies Formation, southeastern Pennsylvania IN Graves, Barbara, ed.,
Radon, radium, and other radioactivity in ground water: Chelsea, Michigan,
Lewis Publishers, p. 437-447.
Cecil, L.D., 1989, Map showing radium concentrations in ground water of the Chickies Formation,
southeastern Pennsylvania, 1986-87:
U.S. Geological Survey Open-File Report 87-232, 1 pl.
Lindsay, B.D., and Ator, S.W., 1996, Radon
in ground water of the Lower Susquehanna and Potomac River Basin:
U.S. Geological Survey Water-Resources Investigations Report 96-4156, 4 p.
[ online report ]
Senior, L.A., 1998, Radon-222 in the ground water of Chester County, Pennsylvania:
U.S. Geological Survey Water-Resources Investigations Report 98-4169, 79 p.
Senior, L.A., and Sloto, R.A., 2000, Radium-224 and its relation to gross-alpha-particle,
radium-226, and radium-228 activities in ground water from rocks of the Piedmont Physiographic
Province, southeastern Pennsylvania [abstract]: Geological Society of America Abstracts with
Programs, Northeastern Section, v. 32, no. 1, p. A-73.
[ abstract ]
Senior, L.A., and Vogel, K.V., 1992, Geochemistry of radium-226 and radium-228, and radon-222
in ground water in the Chickies Quartzite, Southeastern Pennsylvania, in Daniel, C.C. III,
White, R.K., and Stone, P.A., eds., Ground water in the piedmont--Proceedings of a conference
on ground water in the piedmont of the eastern United States, October 16-18, 1989; Clemson,
South Carolina, Clemson University, p. 547-565.
Senior, L.A., and Vogel, K.V., 1995, Radium and radon in ground water in the Chickies Quartzite,
Southeastern Pennsylvania:
U.S. Geological Survey Water-Resources Investigations Report 92-4088, 145 p.
[ abstract ]
Sloto, R.A, 2000, Naturally occurring radionuclides in the ground water of southeastern Pennsylvania:
U.S. Geological Survey Fact Sheet 012-00, 8 p.
[ online report ]
[ PDF file ]
Sloto, R.A, and Senior, L.A., 1998, Radon in the ground water of Chester County, Pennsylvania:
U.S. Geological Survey Fact Sheet 120-98, 4 p.
[ PDF file ]
[ abstract ]
[ online report ]
Sloto, R.A., and Senior, L.A., 2000, Radon-222 activities in the ground water of the Piedmont
Physiographic Province, southeastern Pennsylvania [abstract]: Geological Society of America
Abstracts with Programs, Northeastern Section, v. 32, no. 1, p. A-75.
[ abstract ]

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