TY - GEN AU - Bell, Robert M. ED - U.S. Govt. Print. Off, TI - Mean annual runoff in the upper Ohio River basin, 1941-70, and its historical variation PY - 1978/// CY - Washington PB - U.S. Govt. Print. Off. KW - Runoff KW - Ohio River Watershed N1 - Includes bibliographical references ER -