1. The world Yale Public content 1957. 2003-08-25T15:36:28Z. 2015-10-27T22:20:48Z. National Geographic Society (U.S.). Cartographic Section. The Society. English. Public.
2. The world : series 1107 Yale Public content 1957. 2003-08-26T12:07:47Z. 2023-06-09T21:34:48Z. United States. Army Map Service. Army Map Service, Corps of Engineers. English. Public.