Herbert T Hopkins

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1) Reconnaisance of the ground-water, surface water system in the Zekiah Swamp Run Basin, Charles and Prince Georges Counties, Maryland

Author

Hopkins, Herbert T

Publisher

U.S. Dept. of the Interior, Geological Survey

Pub. Date

1986

2) Ground-water availability along the Blue Ridge Parkway, Virginia

Author

Hopkins, Herbert T

Publisher

Open-File Services Section, Western Distribution Branch, U.S. Geological Survey [distributor]

Pub. Date

1984 (i.e., 1985)