Advanced map and aerial photograph reading.
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| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Washington :
United States Government Printing Office,
1944.
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| Series: | War Department field manual ;
FM 21-26. |
| Subjects: |
| Item Description: | Earlier editions published by U.S. Engineer dept. |
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| Physical Description: | v, 141 p. : ill., diagrs. ; 17 cm. |