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1
Directory of groundwater programs and activities of the federal government /
Washington, D.C. : [Springfield, Va.] : The Office ; [National Technical Information Service, distributor], 1983

Government Document Book
2
Ground-water research : technical assistance directory /
Washington, D.C. : The Agency, 1987

Government Document Book
3
Environmental Protection Agency ground-water research : technical assistance directory /
Silver Spring, Md. (1010 Wayne Ave., Suite 200, Silver Spring 20910) : Environmental Management Support, Inc., 1991
3rd ed.

Government Document Book
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