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Nonpoint and point sources of nitrogen in major watersheds of the United States : introduction / by Larry J. Puckett

Nonpoint and point sources of nitrogen in major watersheds of the United States : introduction / by Larry J. Puckett
Microform図書
1994<YCA-I 19.2:N 63>
National Diet Library
  • Subject Heading... United States Water -- Nitrogen content -- United States Water -- Pollution -- United ...

Nutrients in ground water and surface water of the United States : an analysis of data through 1992 / by David K. Mueller ... [et al.]. (Water-resources investigations report ; 95-4031)

Nutrients in ground water and surface water of the United States : an analysis of data through 1992 / by David K. Mueller ... [et al.]. (Water-resources investigations report ; 95-4031)
Paper図書
U.S. Dept. of the Interior, U.S. Geological Survey1995.<ME354-A37>
National Diet Library
  • Subject Heading...素. 燐. アメリカ合衆国. Water -- Nitrogen content -- United States. Water -- United States -- Ph...

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