Não informado. (2018). Proceedings of the Portland Society of Natural History. Portland Society of Natural History.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the Portland Society of Natural History. Portland, Me: Portland Society of Natural History, 2018.
MLA-referens (8:e uppl.)Não informado. Proceedings of the Portland Society of Natural History. Portland Society of Natural History, 2018.
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