Grimm, N.B., and Fisher, S.G., 1986, Nitrogen limitation potential of Arizona streams and rivers: Arizona-Nevada Academy of Science, Journal, v. 21, p. 31-43.
Grimm, N.B., and Fisher, S.G., 1986, Nitrogen limitation potential of Arizona streams and rivers: Arizona-Nevada Academy of Science, Journal, v. 21, p. 31-43.
Surface Water, Geochemical Survey, Biogeology,