http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (xiii, 226 pages) : illustrations (black and white), maps (black and white).
Geologist Tony Hallam takes readers on a tour of the Earth's history, and of the cataclysmic events, as well as the more gradual extinctions, that have punctuated life on Earth throughout the past 500 million years.
Includes bibliographical references and index.