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241. Hydrologic investigations atlas
Geological Survey (U.S.). U.S. Geological Survey,.
242. Jordan aquifer of Iowa
Horick, Paul J. Iowa Geological Survey,.
243. Land use and land cover
Louisiana Geological Survey. Louisiana Geological Survey,.
244. Massachusetts (Groundwater Discharge Permits, 2003)
MassGIS (Office : Mass.). The Department of Environmental Protection (DEP) Division of Watershed Management (DWM) Water Permitting Program (WPP) is responsible for regulatin... MassGIS (Office : Mass.).
245. Mississippian aquifer of Iowa
Horick, Paul J. Iowa Geological Survey,.
246. Modified geologic map of Nevada : map 5-1, water for Nevada--mineral projections /
Archbold, N. L. (Norbert L.), 1930- compiler, cartographer. Nevada Bureau of Mines and Geology, University of Nevada,.
247. Nihon suiri chishitsu zu Hydrogeological map of Japan /
Murashita, Toshio. Chishitsu Chōsajo].
248. Nitrate in ground water using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States /
Hitt, Kerie J. U.S. Dept. of the Interior, U.S. Geological Survey,.
249. Potential risk to ground water
Louisiana Geological Survey. Louisiana Geological Survey,.
250. Potentiometric surface of the upper Floridan Aquifer in Florida, May 2000
Marella, Richard L. Florida Geological Survey,.