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|All Authors / Contributors:||United States. Army. Corps of Engineers.; United States. War Department. Corps of Engineers.|
|Notes:||"September 17, 1941"--Cover.
"Supersedes TM 2180-5, September 28, 1938"--Page 1.
|Description:||iii, 190 pages,  folded leaf of plates : illustrations, maps ; 18 cm.|
|Series Title:||Basic field manual, FM 21-26; United States War Dept.; Training publications|
|Other Titles:||Map and aerial photograph reading|
|Responsibility:||prepared under direction of the Chief of Engineers.|