Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania

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070 0 ⊔ ‡a407 ‡b.G29W no. 2497
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100 1 ⊔ ‡aCravotta, Charles A.
245 1 0 ‡aUse of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania / ‡cby Charles A. Cravotta, III.
260 ⊔ ⊔ ‡a[Washington, D.C. : ‡bU.S. G.P.O.] ; ‡aDenver CO : ‡bFor sale by the U.S. Geological Survey, Branch of Information Services, ‡c[2002]
300 ⊔ ⊔ ‡av, 99 p. : ‡bill., map ; ‡c28 cm.
490 ⊔ 0 ‡aU.S. Geological Survey water-supply paper ; ‡v2497
500 ⊔ ⊔ ‡a"Prepared in cooperation with the Pennsylvania Department of Environmental Protection."
504 ⊔ ⊔ ‡aIncludes bibliographical references (p. 63-68).
530 ⊔ ⊔ ‡aAlso available via Internet from the USGS web site. Address as of 9/21/02: http://water.usgs.gov/pubs/wsp/wsp2497; current access is available via PURL.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aRadioactive tracers in water pollution research ‡zSusquehanna River Watershed.
650 ⊔ 0 ‡aWater ‡xPollution ‡zSusquehanna River Watershed ‡xPoint source identification.
650 ⊔ 0 ‡aNitrogen ‡xEnvironmental aspects ‡zSusquehanna River Watershed.
710 2 ⊔ ‡aGeological Survey (U.S.)
710 1 ⊔ ‡aPennsylvania. ‡bDept. of Environmental Protection.
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