http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Gonzalo de Berceo's El sacrificio de la Misa
Reprint of the author's thesis, Catholic University of America, 1934, which was first published in 1933 under title: Gonzalo de Berceo, El sacrificio de la Misa, a study of its symbolism and of its sources.
Studies in Romance languages and literatures ; v. 7