{"source":"book","style":"apa","contributors": [{"function":"author","last":"Zahm","first":"Albert","middle":"Francis,"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Appraisals of the Langley powerplane by contemporaries.","city":"Washington","year":"1949"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"51493250"}