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Morris, Desmond
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Krebs, John R.
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Alcock, John
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Titone Di Bianca, Gian Domenico
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Alcock, John
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Groppali, Riccardo
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Alleva, Enrico
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National geographic society
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Alvarez, Fernando <veterinario>
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Lattes Coifmann, Isabella
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Celli, Giorgio <1935-2011>
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Eibl-Eibesfeldt, Irenäus
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Mainardi, Danilo
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Eibl-Eibesfeldt, Irenäus
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Hinde, Robert A.
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Dawkins, Marian Stamp <1945->
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Mainardi, Danilo
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Mainardi, Danilo
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Vauclair, Jacques
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Celli, Giorgio <1935-2011>
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Chauvin, Rémy
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Lorenz, Konrad
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Waal, Frans : de
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Lorenz, Konrad
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Chauvin, Rémy
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Waal, Frans : de
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Lorenz, Konrad
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Lorenz, Konrad
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Barnett, Samuel Anthony
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Sheldrake, Rupert
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Lorenz, Konrad
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Lorenz, Konrad
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Kotrschal, Kurt
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Masson, J. Moussaieff
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Rogers, Lesley
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Alcock, John
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Sparks, John <1939- >
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Vogel, Christian <1933-1994>
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Waal, Frans : de
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Dugatkin, Lee Alan
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Lorenz, Konrad
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Celli, Giorgio <1935-2011>
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Schmidbauer, Wolfgang
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Eibl-Eibesfeldt, Irenäus
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Griffin, Donald R.
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Lorenz, Konrad
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Alleva, Enrico
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