The IUCN invertebrate red data book /
Wells, Susan M.
Pyle, Robert M.
Collins, N. Mark.
International Union for Conservation of Nature and Natural Resources.
World Wildlife Fund.
United Nations Environment Programme.
Cambridge : International Union for Conservation of Nature and Natural Resources,
[1983]
Prepared with the financial assistance of the World Wildlife Fund and the United Nations Environment Programme.
Includes index.
Invertebrates.