"Drainage modifications in southeastern Ohio and adjacent parts of West Virginia and Kentucky."; "Tight, W. G. (William George), 1865-"; "Geology--Ohio River Valley.", "Physical geography--Ohio River Valley."; "Tight, W. G. (William George), 1865-"; "1903"; "

Government document.

"; ""; "P11606"; "pec"; "Physical geography--Ohio River Valley.", "Geology--Ohio River Valley."; "14256"; .