{"source":"book","style":"apa","contributors": [{"function":"author","last":"Hopkins","first":"Donald","middle":"R ,"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"The greatest killer smallpox in history ; with a new introduction","publisher":"Univ. of Chicago Press","city":"Chicago","year":"2002"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"1074515556","isbn":"0226351688 9780226351681 0226351661 9780226351667"}