http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
an international history of heraldry and its contemporary uses together with the definitive guide to national flags, banners, standards and ensigns
World encyclopedia of flags and heraldry
512 pages : illustrations (some color), color maps ; 23 cm.
Includes bibliographical references (pages 500-501) and index.