Statistical analysis of nitrate in ground water, west Salt River Valley, Arizona /
by A.E. Long, James G. Brown, and D.J. Gellenbeck.

APA Citation

Long, A. E., Gellenbeck, D. J., Brown, J. G. (James Gary)., Arizona. Department of Environmental Quality., Geological Survey (U.S.). (1997). Statistical analysis of nitrate in ground water, west Salt River Valley, Arizona. Tucson, Ariz.: U.S. Dept. of the Interior, U.S. Geological Survey .

MLA Citation

Geological Survey (U.S.), et al.. Statistical Analysis of Nitrate In Ground Water, West Salt River Valley, Arizona. Tucson, Ariz.: U.S. Dept. of the Interior, U.S. Geological Survey , 1997.