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monografia Rebiun25981690 https://catalogo.rebiun.org/rebiun/record/Rebiun25981690 m o d cr un||||a|a|| 190214s1997 vauab ob f000 0 eng d 820729974 OCLCE eng pn OCLCE OCLCF OCLCQ n-us-ia Agricultural chemicals in Iowa's ground water, 1982-95-- what are the trends Dana Koplin [and others] At head of title USGS science for a changing world [Reston, Va.?] U.S. Dept. of the Interior, U.S. Geological Survey [1997] [Reston, Va.?] [Reston, Va.?] U.S. Dept. of the Interior, U.S. Geological Survey 1 online resource (4 unnumbered pages) color illustrations, color map 1 online resource (4 unnumbered pages) Text txt rdacontent computer c rdamedia online resource cr rdacarrier Fact sheet FS-116-97 Caption title Shipping list no.: 97-0377-P "September 1997"--Page [4] Includes bibliographical references (page 4) Groundwater flow- Iowa Hydrogeology- Iowa Groundwater- Iowa Groundwater. Groundwater flow. Hydrogeology. Iowa Government publications Koplin, Dana Geological Survey (U.S.) Print version Agricultural chemicals in Iowa's ground water, 1982-95-- what are the trends. [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, [1997] (OCoLC)37751871 Fact sheet (Geological Survey (U.S.)) FS-97-116