00977nam a2200253Ia 4500001000700000003000500007005001700012008004100029010001500070050002700085082002000112086001900132100002900151245016000180260003500340300007200375490006100447490006100508504005200569650001700621651003200638700003000670700002300700192039BIBL20160527191859.0930309s1993    dcua     b   f000 0 eng    a 93003584 00aGB1199.3.H53bH45 199300a551.49/09782200 aI 19.16:1414-E1 aHelgesen, John O.2Local10aHydrology of the Great Plains aquifer system in Nebraska, Colorado, Kansas, and adjacent areascby John O. Helgesen, Robert B. Leonard, and Ronald J. Wolf.  aWashingtonbU.S. G.P.O.c1993.  aviii, 80 p.bill.c29 cm. b+ s 10 fold. maps in separate portfolio. 0aRegional aquifer-system analysis--Central Midwest2Local 0aU.S. Geological Survey professional paperv1414-E2Local  aIncludes bibliographical references (p. 77-80). 0an-uss2Local 0aHigh Plains Aquifer.2Local10aLeonard, Robert B.2Local10aWolf, R. J.2Local