http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mount Wilson Catalogue of photographic magnitudes in selected areas 1-139
EYN, Jacobus Cornelius: -- ount Wilson Catalogue of photographic -- agnitudes in selected areas 1-139. 1930. -- s. SEARES, Frederick Hanley. -- AB/Li