{"source":"book","style":"apa","contributors": [{"function":"author","last":"Langley","first":"S","middle":"P"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Experimental determination of wave-lengths in the invisible prismatic spectrum","publisher":"G.P.O.","city":"Washington","year":"1884"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"11280508"}