Trends in nitrogen and phosphorus concentrations in southern New England streams, 1974-92.

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100 1 ‡aZimmerman, Marc James, ‡d1947-
245 1 0 ‡aTrends in nitrogen and phosphorus concentrations in southern New England streams, 1974-92.
260 ‡a[Reston, Va.?] : ‡bU.S. Dept. of the Interior, U.S. Geological Survey, ‡c[1997]
300 ‡a[4] p. : ‡bcol. ill., col. maps ; ‡c28 cm.
490 0 ‡aNational Water-Quality Assessment fact sheet ; ‡v001-97
538 ‡aMode of access: Internet.
650 0 ‡aWater ‡xPhosphorus content ‡zNew England.
650 0 ‡aWater ‡xNitrogen content ‡zNew England.
650 0 ‡aNutrient pollution of water ‡zNew England.
650 0 ‡aWater quality ‡zNew England.
710 2 ‡aGeological Survey (U.S.)
CID ‡a101708025
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