http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
239 p. illus., 28 plates (incl. 12 col.) maps, facsims., tables. 25 cm.
by A. Charles Begg & Neil C. Begg; foreword by the Right Hon. the Viscount Cobham.