(Division of Water Control Planning, Maps and Surveys Branch.) [Sponsored by Maps and Surveys joint union-management conference, Chattanooga, Tenn., Jan. 1966. Some illustrations are colored.]
Notes:
(Division of Water Control Planning, Maps and Surveys Branch.) [Sponsored by Maps and Surveys joint union-management conference, Chattanooga, Tenn., Jan. 1966. Some illustrations are colored.] † Distribution Made by Issuing Office.