found: Hegel, G. W. F. Fenomen del espíritu, 1935:title page (traducción del alemán por X. Zubiri)
found: El hombre y Dios, 1985:title page (Xavier Zubiri) cover (died September 21, 1983)
found: The Xavier Zubiri Foundation of North America website, viewed February 23, 2016(Xavier Zubiri (1898-1983); Xavier Zubiri y Apalategui; Spanish philosopher and member of the school of Madrid; born in San Sebastián (Donostia-San Sebastián, Gipuzkoa, Spain), on December 4, 1898; died in Madrid on September 21, 1983) - http://www.zubiri.org/
found: Info. converted from 678, 2012-10-02(b. 1898)