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Leemans, Pieter De, and Matthew Klemm. "Animals and Anthropology in Medieval Philosophy: Pieter De Leemans. Matthew Klemm." A Cultural History of Animals in the Medieval Age.(2007) .

Leemans, Pieter De, and Matthew Klemm. "Animals and Anthropology in Medieval Philosophy: Pieter De Leemans. Matthew Klemm." A Cultural History of Animals in the Medieval Age.(2007), .