{"source":"book","style":"apa","contributors": [{"function":"author","last":"Fielding","first":"Mantle"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"American engravers upon copper and steel","publisher":"B. Franklin","city":"New York","year":"1964"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"4671527"}