U. S. Dept. of the Interior ; prepared in cooperation with the States of Connecticut, Delaware, Maine, Maryland, Massachusettts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, and with the District of Columbia, and with other agencies
U. S. Gov. Printing Office
1975
U.S. Geological Survey water-supply paper
2151 . Quality of surface waters of the United States 1970 ; Pt. 1
所蔵館1館