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[文献書誌] Kosei Izawa: "Social changes within a group of wild blackーcapped capuchins(Cebus apella)in Colombia(II)" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 1-5 (1990)
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[文献書誌] Kosei Izawa: "Rat Predation by wild capuchins(Cebus apella)" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 19-24 (1990)
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[文献書誌] Kosei Izawa & Henry Lozano: "River Crossing by a wild howler monkey(Alouatta seniculus)" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 29-33 (1990)
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[文献書誌] Kosei Izawa: "Social Changes of Cebus apella and Alouatta seniculus" International Journal of Primatology. (1991)
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[文献書誌] Kosei Izawa: "Why do only Alouatta and Ateles eat soil?" International Journal of Primatology. (1991)
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[文献書誌] Akisato Nishimura: "Mating behavior of woolly monkeys(Lagothrix lagotricha)at La Macarena,Colombia (II):mating relationships" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 7-12 (1990)
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[文献書誌] Akisato Nishimura: "A sociological and behavioral study of woolly monkeys,Lagothrix lagotricha,in the upper Amazon" 同志社大学理工学研究報告. 31(2). 87-121 (1990)
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[文献書誌] 木村 光伸: "熱帯降雨林における霊長類の同所的種" 名古屋学院大学ディスカッション・ペ-パ-. 16. 1-20 (1991)
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[文献書誌] Koshin Kimura: "The local community of wild blackーcapped capuchins" 名古屋学院大学研究年報. 2. 261-271 (1989)
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[文献書誌] Yoshihiko Hirabuki: "Vegetation and landform structure in the study area of La Macarena:a physiognomic investigation" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 35-48 (1990)
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[文献書誌] Yoshihiko Hirabuki & Kosei Izawa: "Chemica properties of soils eaten by wild red howler monkeys (Alouatta seniculus):a preliminary study" Field Studies of New World Monkeys,La Macarena,Colombia. 3. 25-28 (1990)
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[文献書誌] 伊沢 紘生: "『サルの文化誌』、第2章の2 もう一つの進化の道ー新世界ザルの多様な社会ー" 平凡社, 57-84 (1991)
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[文献書誌] 西邨 顕達: "『サルの文化誌』、第2章の3 南米の父系社会ーウ-リ-モンキ-の社会交渉から" 平凡社, 85-108 (1991)