{"source":"book","style":"apa","contributors": [{"function":"author","last":"Agassiz","first":"Louis"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Methods of study in natural history","publisher":"Ticknor and Fields","city":"Boston","year":"1863"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"184641","isbn":"0405026536 9780405026539"}