http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
An introduction to the United States that provides information on the country’s geography, people, culture, history, government, economy, and climate.
James A. Banks ... [et al.] ; National Geographic Society (U.S.)
Study and teaching (Elementary),Study and teaching (Elementary)