By Bujanda, Jesus.
Madrid Ed. Razón y Fe 1951 .
258 p.

By Guilbert J. de..
Madrid Ed. Razón y Fe 1953 .
432 p. , Includes index.

By Lebreton, Jules.
Madrid Ed. Razón y Fe 1952

By Baumann, Teodoro, S.J..
Madrid Ed. Razón y Fe 1946 .
339 p.

By Llorca, Bernardino.
Madrid Ed. Razón y Fe 1951 .
632 p.

By González, Ireneo.
Madrid Ed. "Razón y Fe" 1943 .
199 p.

By Gemelli, Agostino.
Madrid Ed. Razon y Fe 1956 .
238 p. , Includes indexes.

By Vries, José de.
Madrid Ed. Razón y Fe 1946 .
331 p. , Translation of: Denken und sein.

By Robinot Marcy, G..
Madrid Ed. Razón y Fe 1932 .
173 p.

By Vries, José de.
Madrid Ed. Razón y Fe 1945 .
xi, 296 p. , Translation of : Denken und sein.