00719cam a22002291 4500 gs 61000226 DLC 20260227111410.0 821018s1961 dcuab f000 0 eng c gs 61000226 (OCoLC)8871111 U.S. Geol. Survey. Libr. MsSM MsSM DLC premarc n-us-oh QE75 .C5 no. 439 Steacy, Robert E. (Robert Evans), 1915- Time of travel of water in the Ohio River, Pittsburgh to Cincinnati. Washington, 1961. iii, 14 p. map, diagrs., tables. 27cm. Geological Survey (U.S.). Circular 439 Stream measurements Ohio River. 29552 29552