http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
25 years of opera and ballet, Royal Opera House
An exhibition organised by the Royal Opera House and the Victoria and Albert Museum in co-operation with the Friends of Covent Garden and the Arts Council of Great Britain, Victoria and Albert Museum, 19 August - 10 October 1971 .