Nutrients in the nation`s waters : too much of a good thing? /
Mueller, David K.
Nutrients in the nation's waters : too much of a good thing? / by David K. Mueller and Dennis R. Helsel ; edited by Mary A. Kidd. - [Washington, D.C.] : U.S. G.P.O., 1996. - 24 p. : col. ill., col. maps ; 28 cm. - U.S. Geological Survey circular ; 1136 .
Includes bibliographical references (p. 22).
Nutrient pollution of water--United States.
TD427.N87 / M84 1996
Nutrients in the nation's waters : too much of a good thing? / by David K. Mueller and Dennis R. Helsel ; edited by Mary A. Kidd. - [Washington, D.C.] : U.S. G.P.O., 1996. - 24 p. : col. ill., col. maps ; 28 cm. - U.S. Geological Survey circular ; 1136 .
Includes bibliographical references (p. 22).
Nutrient pollution of water--United States.
TD427.N87 / M84 1996