http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a guide to mounds and earthworks of the Adena, Hopewell, Cole, and Fort Ancient people
xii, 304 pages : illustrations (some color), maps ; 23 cm.
Susan L. Woodward and Jerry N. McDonald.
Includes bibliographical references [pages 286-300] and index.
McDonald & Woodward guide to the American landscape