Sediment loads, discharges, and yields in the East Branch Mahoning Creek Basin, Clearfield and Jefferson counties, Pennsylvania, June 1979 through September 1981 /

by Loper, Connie A.
Harrisburg, Pa. : Denver, Colo. : Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-File Reports Section [distributor], 1988