{"source":"journal","style":"apa","journal": {"title":"National geographic [periodical]." },"contributors": [{"function":"author","last":"National Geographic Society (U.S.),"} ],"pubtype": {"main": "pubjournal"},"pubjournal": {"year":"1959"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"1041608360","issn":"0027-9358"}