01181nam a2200265Ia 4500001000700000003000500007005001700012008004100029010001500070040001800085043001200103050002400115082002000139086001900159100002900178245017000207260015300377300005700530490007700587490006100664500003500725504005200760650007400812700002900886211239BIBL20160527194914.0910603s1996    dcuab    b   f000 0 eng    a 91022860   aDLCcDLCdDLC  an-usl--00aGB1197.7b.F54 199600a551.49/09752200 aI 19.16:1404-J1 aFleck, William B.2Local10aSimulation of ground-water flow of the coastal plain aquifers in parts of Maryland, Delaware, and the District of Columbiacby William B. Fleck and Don A. Vroblesky.  aWashingtonbU.S. G.P.O.bU.S. Dept. of the Interior, U.S. Geological SurveyaDenver, CObFor sale by U.S. Geological Survey, Map Distributionc1996.  ax, 41 p.bill. (some col.), maps (some col.)c29 cm. 0aRegional aquifer-system analysis--northern Atlantic coastal plain2Local 0aU.S. Geological Survey professional paperv1404-J2Local  aNine folded maps in portfolio.  aIncludes bibliographical references (p. 40-41). 0aGroundwater flowzMiddle Atlantic StatesxComputer simulation.2Local1 aVroblesky, Don A.2Local