Featherstonhaugh, G. W. (1831). The Monthly American journal of geology and natural science. Henry H. Porter.
Lua i Stíl Chicago (17ú heag.)Featherstonhaugh, George William. The Monthly American Journal of Geology and Natural Science. Philadelphia: Henry H. Porter, 1831.
Lua MLA (8ú heag.)Featherstonhaugh, George William. The Monthly American Journal of Geology and Natural Science. Henry H. Porter, 1831.
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