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MLA
United States. Army Map Service. (Cartographer). Eastern Siberia 1:250,000. Series N504. [Chekunda, Sheet NM53-4] - University of Texas Libraries Collections. 1947. https://collections.lib.utexas.edu/catalog/utlmaps:8ff48659-7cb9-4d28-b9b6-39a06f6ddea4APA
United States. Army Map Service. (Cartographer). (1947). Eastern Siberia 1:250,000. Series N504. [Chekunda, Sheet NM53-4]. Retrieved April 27, 2025, from https://collections.lib.utexas.edu/catalog/utlmaps:8ff48659-7cb9-4d28-b9b6-39a06f6ddea4Chicago
United States. Army Map Service. (Cartographer). Eastern Siberia 1:250,000. Series N504. [Chekunda, Sheet NM53-4]. 1947. "Eastern Siberia 1:250,000. Series N504. [Chekunda, Sheet NM53-4] – Collections". University of Texas Libraries Collections. <https://collections.lib.utexas.edu/catalog/utlmaps:8ff48659-7cb9-4d28-b9b6-39a06f6ddea4> (27-April-2025).Note that these citations have been automatically generated, please verify that citation is correct and contains all necessary information.