http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
xi, 165 pages : illustrations ; 22 x 27 cm.
Includes bibliographical references (pages 157-162) and index.
[Washington] U.S. National Park Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1970