http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
the ICBP world checklist of threatened birds
International Council for Bird Preservation
by N.J. Collar and P. Andrew ; with contributions from L.P. Gonzaga [and others].
Includes bibliographical references (pages 173-197) and indexes.