(1972). Classification of the animal kingdom: An illustrated guide. English Universities Press : Reader's Digest Association.
Cita Chicago Style (17a ed.)Classification of the Animal Kingdom: An Illustrated Guide. London: English Universities Press : Reader's Digest Association, 1972.
Cita MLA (9a ed.)Classification of the Animal Kingdom: An Illustrated Guide. English Universities Press : Reader's Digest Association, 1972.
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