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41Published in Zeitschrift für Tierpsychologie (1961)Get access
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42
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43Published in Zeitschrift für Tierpsychologie (1961)Get access
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44Published in Zeitschrift für Tierpsychologie (1978)Get access
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48Published in Zeitschrift für Tierpsychologie (1967)Get access
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49Published in Zeitschrift für Tierpsychologie (1978)Get access
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50
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51by Packard, Jane M., Seal, Ulysses S., Mech, L. David, Plotka, Edward D.Get access
Published in Zeitschrift für Tierpsychologie (1985)
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52Published in Zeitschrift für Tierpsychologie (1984)Get access
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53
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54Published in Zeitschrift für Tierpsychologie (1963)Get access
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55Published in Zeitschrift für Tierpsychologie (1975)Get access
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