00782cam a2200253 4500 agr68000330 DLC 20260227111031.0 700720s1968 dcua b 000 0 eng c agr68000330 U.S. Nat'l Agr. Libr. DLC DLC S900 .U5 no. 143 A56.9 R31 no. 143 Williams, Jimmy R. Runoff hydrographs from small Texas blacklands watersheds [by Jimmy R. Williams. Washington] U.S. Dept. of Agriculture, 1968. 24 p. illus. 26 cm. [United States. Agricultural Research Service] ARS 41 -143 Bibliographical footnotes. Watersheds. Runoff. Watersheds. Runoff. 12614 12614