Vigilance in ursine black and white colobus monkeys (Colobus vellerosus): an examination of the effects of conspecific threat and predation
2009 ◽
Vol 71
(11)
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pp. 919-927
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2013 ◽
Vol 153
(3)
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pp. 365-376
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1993 ◽
Vol 22
(4)
◽
pp. 278-279
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