Não informado. (1894). Geological literature added to the Geological Society's Library. Geological Society of London.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Geological Literature Added to the Geological Society's Library. London: Geological Society of London, 1894.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Geological Literature Added to the Geological Society's Library. Geological Society of London, 1894.
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