01471nam a2200289Ia 4500001000700000003000500007005001700012008004100029010001500070043001200085050003900097082003600136086002300172100002600195245018100221260011800402300003300520490006100553490005100614500013200665504005200797650008700849650005800936700003300994700004901027740010501076192532BIBL20160527192014.0931019s1993    dcuab    b   f000 0 eng    a 93023656   an-usm--00aGB1217b.F58 1993 ch. CaTD427.A3500a551.48/9/0977 sa628.1/68422200 aI 19.4/3:CI 1120-C1 aGoolsby, D. A.2Local10aOccurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993cby Donald A. Goolsby, William A. Battaglin, and E. Michael Thurman.  a[Washington]bU.S. G.P.O.aDenver, CObFree on application to the U.S. Geological Survey, Map Distributionc1993.  av, 22 p.bill., mapsc28 cm. 0aFloods in the Upper Mississippi River basin, 1993vch. C 0aU.S. Geological Survey circularv1120-C2Local  aTitle on p. [4] of cover: Occurrence and transport, agricultural chemicals, Mississippi River basin, July through August, 1993.  aIncludes bibliographical references (p. 21-22). 0aAgricultural chemicalsxEnvironmental aspectszMississippi River Watershed.2Local 0aWaterxPollutionzMississippi River Watershed.2Local10aBattaglin, William A.2Local10aThurman, E. M.q(Earl Michael)d1946-2Local01aOccurrance and transport, agricultural chemicals, Mississippi River basin, July through August 1993.