Rekultivierung als ein wirtschaftlicher Faktor im Kohlentagebau der Provinz Alberta in Kanada by B. J. Ebel

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Protracted development of stick tool use skills extends into adulthood in wild western chimpanzees by Mathieu Malherbe, Liran Samuni, Sonja J. Ebel, Kathrin S. Kopp, Catherine Crockford, Roman M. Wittig

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Protracted development of stick tool use skills extends into adulthood in wild western chimpanzees. by Mathieu Malherbe, Liran Samuni, Sonja J Ebel, Kathrin S Kopp, Catherine Crockford, Roman M Wittig

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Functional fixedness in chimpanzees by Sonja J. Ebel, Christoph J. Völter, Alejandro Sánchez-Amaro, Katharina A. Helming, Esther Herrmann, Josep Call

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