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Author (up) Title Year Publication Serial Volume Pages
Hoff, M.P.; Powell, D.M.; Lukas, K.E.; Maple, T.L. Individual and social behavior of lowland gorillas in outdoor exhibits compared with indoor holding areas 1997 Applied Animal Behaviour Science 2143 54 359-370
Powell, D.M. Preliminary evaluation of porcine zona pellucida (PZP) immunocontraception for behavioral effects in feral horses (Equus caballus) 1999 Journal of Applied Animal Welfare Science : JAAWS 1883 2 321-335