Swanson, J. C., Kreger, M. D., Berry, D. J. et al. 1992 & 1991. Environmental Enrichment Information Resources for Nonhuman Primates: 1987-1992 & Primates: 1987-1990. Animal Welfare Information Center, Belsville, MD.
References sorted under the following main headings:General, Great Apes, Lesser Apes, Old World Monkeys, New World Monkeys, Prosimians, Author Index
Year
1992