[Showing water temperature data, and blank observation forms]
Reproduction Note:
Microfiche. [Bethesda, Md.]: Congressional Information Service, 1994. 11 x 15 cm. (CIS US Executive Branch Documents, 1789-1909: no. N1410-15.1 to N1410-16.4)
Reviewed/Cited In:
CIS Index to U.S. Executive Branch Documents, 1789-1909 Part 5