Water resources of the Humacao-Naguabo area, eastern Puerto Rico /

by Graves, Robert P.
Published 1989

Hydrogeology of south-central St. Croix, U.S. Virgin Islands /

by Graves, Robert P.
Published 1995

Hydrogeology in the vicinity of test holes and wells on St. Croix, St. Thomas, and St. John, U.S. Virgin Islands.

by Graves, Robert P.
Published 1996

Analysis of water-level data in the Yucca Mountain area, Nevada, 1985-95.

by Graves, Robert P.
Published 1997

Water resources of the Humacao-Naguabo area, eastern Puerto Rico /

by Graves, Robert P.
Published 1989

Ground-water resources in Lajas Valley, Puerto Rico /

by Graves, Robert P.
Published 1991

Hydrology of south-central St. Croix, U.S. Virgin Islands /

by Graves, Robert P.
Published 1995

Geohydrology of the Aguirre and Pozo Hondo areas, southern Puerto Rico /

by Graves, Robert P.
Published 1992

Hydrogeology in the vicinity of test holes and wells on St. Croix, St. Thomas, and St. John, U.S. Virgin Islands /

by Graves, Robert P.
Published 1996

Potentiometric surface of the Turpentine Run basin aquifer in the Tutu area, eastern St. Thomas, U.S. Virgin Islands, September 11, 1987 /

by Graves, Robert P., Gonzalez, Ralph
Published 1988

Analysis of water-level data in the Yucca Mountain area, Nevada, 1985-95 /

by Graves, Robert P., Tucci, Patrick, O'Brien, Grady M.
Published 1997