Bacteriological quality of ground water used for household supply, Lower Susquehanna River Basin, Pennsylvania and Maryland /

by Bickford, Tammy M.
Lemoyne, Pa. : Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996

Bacteriological quality of ground water used for household supply, Lower Susquehanna River Basin, Pennsylvania and Maryland /

by Bickford, Tammy M.
Lemoyne, Pa. : U.S. Geological Survey, 1996

Bacteriological quality of ground water used for household supply, Lower Susquehanna River Basin, Pennsylvania and Maryland /

by Bickford, Tammy M.
Lemoyne, Pa. : Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996

Bacteriological quality of ground water used for household supply, Lower Susquehanna River Basin, Pennsylvania and Maryland /

by Bickford, Tammy M.
Lemoyne, Pa. : Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996

Hydrogeologic framework and sampling design for an assessment of agricultural pesticides in ground water in Pennsylvania /

by Lindsey, Bruce D., 1962-
Lemoyne, Pa. : U.S. Dept. of the Interior, U.S. Geological Survey, 1999

Hydrogeologic framework and sampling design for an assessment of agricultural pesticides in ground water in Pennsylvania /

by Lindsey, Bruce D., 1962-
Lemoyne, Pa. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1999

Hydrogeologic framework and sampling design for an assessment of agricultural pesticides in ground water in Pennsylvania /

by Lindsey, Bruce D., 1962-
Lemoyne, Pa. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1999