Distribution of nitrates and other water pollutants under fields and corrals in the middle South Platte Valley of Colorado - Stewart, B. A. (Bobby Alton), 1932- (Washington] Agricultural Research Service, U.S. Dept. of Agriculture, 1967)
Cover title.
Bibliography: p. 205-206.
Keywords: Nitrates; Water -- Pollution -- South Platte River Valley (Colo. and Neb.); Nitrates; Water, Underground -- South Platte Valley; Water -- Pollution