http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"(Originally published in El Palacio, (volume 65, number 6, Dec. 1958, pp. 225-233) It is reproduced here by permission of the editor...for distribution to Katunob recipients.)" cf. colophon.