The Potomac, its water resources
By: U.S. Department of the Interior Geological Survey
Contributors: Geological Survey (U.S.)
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1960
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 23
Subjects: Water-supply -- United States; Potomac River
Notes: Cover title