Time of travel of water in the Potomac river Cumberland to Washingto n /
Sewarcy, James K.
Time of travel of water in the Potomac river Cumberland to Washingto n / James K. Searcy and Luther C. Davis. - Washington, D.C. : The U.S. Geological Survey , 1960. - 12 p. : ill. ; 27 cm. - Geological Survey Circular ; no.438 .
Includes bibliographical references.
United States Department of the Interior.
G. U.S. I53 (08) 1/438
Time of travel of water in the Potomac river Cumberland to Washingto n / James K. Searcy and Luther C. Davis. - Washington, D.C. : The U.S. Geological Survey , 1960. - 12 p. : ill. ; 27 cm. - Geological Survey Circular ; no.438 .
Includes bibliographical references.
United States Department of the Interior.
G. U.S. I53 (08) 1/438