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61
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62Published 1990Subjects: “...Animal Welfare Information Center (U.S.)...”
Animal Welfare Information Center (AWIC) (Online).
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63
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64
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65
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66
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67by Hornaday, William T. (William Temple), 1854-1937Subjects: “...Animal behavior....”
Published 1922
Book -
68
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69
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70
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71by Elton, Charles S. (Charles Sutherland), 1900-1991Subjects: “...Animal ecology....”
Published 1966
Book -
72
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73
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74
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75
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76
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77
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78by Fraenkel, Gottfried S. (Gottfried Samuel), 1901-1984Subjects: “...Animal behavior....”
Published 1961
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79
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80by Andrewartha, H. G. (Herbert George), 1907-1992Subjects: “...Animal ecology....”
Published 1982
Book