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Author (up) Title Year Publication Serial Volume Pages
Visalberghi E; Fragaszy DM; Savage-Rumbaugh ES Performance in a tool-using task by common chimpanzees (Pan troglodytes), bonobos (Pan paniscus), an orangutan (Pongo pygmaeus), and capuchin monkeys (Cebus apella) 1995 J. Comp. Psychol. 3077 109 52