31 O’Brien, T.G. Kinnaird, M.F. Wibisono, H.T. 2010 Estimation of species richness of large vertebrates using camera traps: An examples from an Indonesian rainforest Tokyo Springer Verlag 31 O’Brien, T.G. Kinnaird, M.F. Wibisono, H.T. 2010 Estimation of species richness of large vertebrates using camera traps: An examples from an Indonesian rainforest Tokyo Springer Verlag