Pigs, peccaries, and hippos : status survey and conservation acti on plan /
edited by William L.R. Oliver ; IUCN/SSC Pigs and Peccarie s Specialist Group, IUCN/SSC Hippo Specialist Group.
- Gland, Switzerland : IUCN, c1993.
- xiii, 202 p. : ill., maps ; 28 cm.