http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Cambridge economic history of the United States
3 volumes : illustrations, maps ; 24 cm.
v. 1. The colonial era -- v. 2. The long nineteenth century -- v. 3. The twentieth century.
edited by Stanley L. Engerman, Robert E. Gallman.
Includes bibliographical references and index.