http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
drawings, pastels, and watercolours : a catalogue raisonné
Paul Mellon Centre for Studies in British Art
xli, 642 pages : illustrations (some color) ; 30 cm.
Includes bibliographical references (pages xvi-xxiv) and indexes.