Não informado. (2009). Proceedings of the Birmingham Natural History Society. Birmingham Natural History and Philosophical Society.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the Birmingham Natural History Society. Birmingham, Inglaterra: Birmingham Natural History and Philosophical Society, 2009.
MLA-referens (8:e uppl.)Não informado. Proceedings of the Birmingham Natural History Society. Birmingham Natural History and Philosophical Society, 2009.
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