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| Utgitt
| London : Penguin Books , 1952
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| Omfang
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| Utgave
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| Opplysninger
| På omslaget: "An account of our knowledge of the minds of animals, explaining how much their lives depend on their senses, on instinct, a capacity to learn, and on intelligence"
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| Emner
| dyr zoologi dyreverden dyrespråk lyder farger lek ritualer instinkt intelligens
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