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Geological Survey (U.S.)
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Point source identification

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1.
Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania
Author
Cravotta, Charles A.
Published
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver CO : For sale by the USGS Information Services, 1997 [i.e., 2002].
Online
http://purl.access.gpo.gov/GPO/LPS22447
Location
Library Shelving Facility (LSF) >> QE75 W3 2497 (LC) Oversize
Yale University Library
Format
Books
2.
Nonpoint and point sources of nitrogen in major watersheds of the United States
Author
Puckett, Larry J.
Published
Reston, Va. : U.S. Geological Survey ; Denver, CO : USGS Earth Science Information Center, Open-File Reports Section [distributor], 1994.
Online
http://purl.access.gpo.gov/GPO/LPS23663
Location
Yale Internet Resource
Format
Books / Online
3.
Nonpoint and point sources of nitrogen in major watersheds of the United States : introduction
Author
Puckett, Larry J.
Published
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, [1994?]
Location
Library Shelving Facility (LSF) >> I 19.2:N 63
Format
Books
4.
U.S. Geological Survey Toxic Substances Hydrology Program abstracts of the technical meeting, Monterey, California, March 11-15, 1991
Published
Reston, Va. : Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : Books and Open-File Reports [distributor], 1991.
Location
MARX Library MICRO - ask at Info Desk >> QE75 O63 91-88 (LC)
Format
Books / Microforms