01049cam a2200277 4500 agr68000057 DLC 20260227111028.0 690925s1967 dcua b 000 0 eng c agr68000057 U.S. Nat'l Agr. Libr. DLC DLC S900.U5 no. 134 A56.9 R31 no. 134 Distribution of nitrates and other water pollutants under fields and corrals in the middle South Platte Valley of Colorado [by B. A. Stewart and others. Washington] Agricultural Research Service, U.S. Dept. of Agriculture, 1967. v, 206 p. illus. 26 cm. [United States. Agricultural Research Service] ARS 41-134 Cover title. Bibliography: p. 205-206. Nitrates. Water Pollution South Platte River Valley (Colo. and Neb.) Nitrates. Water, Underground South Platte Valley. Water Pollution. Stewart, B. A. (Bobby Alton), 1932- 12371 12371