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Water resources of the Lake of the Woods watershed, north-central Minnesota by Helgesen, John O.
Reston, Va. : The Survey, 1975Call Number: Loading…
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2
Water resources of the Mississippi and Sauk rivers watershed, central Minnesota by Helgesen, John O.
Reston, Virginia : U.S. Geological Survey, 1975Call Number: Loading…
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3
Hydrology of the Great Plains aquifer system in Nebraska, Colorado, Kansas, and adjacent areas by Helgesen, John O.
Washington : U.S. G.P.O., 1993Call Number: Loading…
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4
Description of data files compiled for the Central Midwest Regional Aquifer-System Analysis by Helgesen, John O.
Denver, Colo. : Dept. of the Interior, U.S. Geological Survey : Books and Open-File Reports [distributor], 1989Call Number: Loading…
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5
Hydrology of the Great Plains Aquifer system in Nebraska, Colorado, Kansas, and adjacent areas by Helgesen, John O.
Washington : Denver, Colo. : U.S. G.P.O. ; For sale by Book and Open-File Report Sales, 1993Call Number: Loading…
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6
Water resources of the Mississippi and Sauk Rivers watershed, central Minnesota by Helgesen, John O.
Reston, Va. : U.S. Geological Survey, 1975Call Number: Loading…
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7
Ground-water appraisal of the Pineland Sands area, central Minnesota by Helgesen, John O.
St. Paul, Minn. : U.S. Geological Survey, 1977Call Number: Loading…
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8
Assessment of nonpoint-source contamination of the High Plains aquifer in south-central Kansas, 1987 by Helgesen, John O.
Washington, DC : Denver, CO : U.S. G.P.O. ; For sale by U.S. Geological Survey, Map Distribution, 1994Call Number: Loading…
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9
Geology and water-supply potential of the Anoka sand-plain aquifer, Minnesota by Helgesen, John O.
St. Paul : Minnesota Department of Natural Resources, Division of Waters, 1977Call Number: Loading…
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10
Hydrogeology and ground-water-quality conditions at the Harvey County Landfill, south-central Kansas, 1990 by Helgesen, John O.
Lawrence, Kan. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-File Reports [distributor], 1993Call Number: Loading…
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11
Water resources of the Lake of the Woods watershed, north-central Minnesota by Helgesen, John O.
Reston, Va. : U.S. Geological Survey, 1975Call Number: Loading…
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12
Water resources of the Little Fork River watershed, northeastern Minnesota by Helgesen, John O.
Reston, Va. : The Survey, 1976Call Number: Loading…
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13
Assessment of nonpoint-source contamination of the High Plains aquifer in south-central Kansas, 1987 by Helgesen, John O.
Lawrence, Kan. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports [distributor], 1992Call Number: Loading…
Located: Loading…Format: Government Document Conference Proceeding Book
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14
Water resources of the Little Fork River watershed, northeastern Minnesota by Helgesen, John O.
Reston, Va. : U.S. Geological Survey, 1976Call Number: Loading…
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15
Appraisal of ground water for irrigation in the Little Falls area, Morrison County, Minnesota by Helgesen, John O.
Washington : U.S. Govt. Print. Off., 1973Call Number: Loading…
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16
Water resources of the Little Fork River watershed, northeastern Minnesota by Helgesen, John O.
Reston, Va. : The Survey, 1976Call Number: Loading…
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17
A steady-state unsaturated-zone model to simulate pesticide transport by Rutledge, A. T.
Lawrence, Kan. : Denver, Colo. :; Lawrence, Kan. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports [distributor], 1991Other Authors: “…Helgesen, John O.…”
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18
Ground- and surface-water interaction between the Kansas River and associated alluvial aquifer, northeastern Kansas by Wolf, R. J. (Ronald J.)
Lawrence, Kan. : Denver, Colo. :; Lawrence, Kan. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-File Reports, Denver Federal Center [distributor], 1993Other Authors: “…Helgesen, John O.…”
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19
Water resources of the Kettle River Watershed, east-central Minnesota
Washington : U.S. Geological Survey, 1973Other Authors: “…Helgesen, John O.…”
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20
Characterization of ground-water flow and chemical transport beneath two irrigated fields in south-central Kansas, 1988 by Rutledge, A. T.
Lawrence, Kan. : Denver, Colo. :; Lawrence, Kan. : Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section [distributor], 1990Other Authors: “…Helgesen, John O.…”
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Water-supply
Groundwater
Hydrology
Watersheds
Aquifers
Maps
Environmental aspects
Aspect de l'environnement
Eau souterraine
Groundwater flow
Qualité
Quality
Water quality
Computer simulation
Décharges contrôlées
Eau
Écoulement
Geochemistry
Irrigation
Land use
Little Fork River watershed (Minn.)
Measurement
Nonpoint source pollution
Pesticides
Pollution
Pollution diffuse
Sanitary landfills
Utilisation du sol
Water levels
Water resources development