Surface observations :
Change no. 3, includes changes 1 and 2 ; effective July 1, 1975

APA Citation

United States. Department of Commerce., United States. Department of Transportation., United States. Department of Defense. (1975). Surface observations: Change no. 3, includes changes 1 and 2 ; effective July 1, 1975. rev. 1st ed Washington, D.C.: U.S. Dept. of Commerce, U.S. Dept. of Defense, U.S. Dept. of Transportation .

MLA Citation

United States. Department of Commerce, United States. Department of Transportation, and United States. Department of Defense. Surface Observations: Change No. 3, Includes Changes 1 And 2 ; Effective July 1, 1975. rev. 1st ed Washington, D.C.: U.S. Dept. of Commerce, U.S. Dept. of Defense, U.S. Dept. of Transportation , 1975.