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MLA
United States. Army. American Expeditionary Forces. Intelligence Section. G-2-C (Topography) (Cartographer). Sketch map (carte provisoire) : région tranchée de Calonne-Les Eparges-Combres - University of Texas Libraries Collections. 1918-01-01. https://exhibits.lib.utexas.edu/spotlight/war-mapping/catalog/9395ec6487979dbcf565add137f49e96APA
United States. Army. American Expeditionary Forces. Intelligence Section. G-2-C (Topography) (Cartographer). (1918-01-01). Sketch map (carte provisoire) : région tranchée de Calonne-Les Eparges-Combres. Retrieved April 19, 2024, from https://exhibits.lib.utexas.edu/spotlight/war-mapping/catalog/9395ec6487979dbcf565add137f49e96Chicago
United States. Army. American Expeditionary Forces. Intelligence Section. G-2-C (Topography) (Cartographer). Sketch map (carte provisoire) : région tranchée de Calonne-Les Eparges-Combres. 1918-01-01. Sketch map (carte provisoire) : région tranchée de Calonne-Les Eparges-Combres – Collections". University of Texas Libraries Collections. <https://exhibits.lib.utexas.edu/spotlight/war-mapping/catalog/9395ec6487979dbcf565add137f49e96> (19-April-2024).Note that these citations have been automatically generated, please verify that citation is correct and contains all necessary information.