By Bettger, Frank..
México Editorial Azteca 1969 .
284 p. , Translation of: The Frank Bettger sales theatre.

By Rogers, Keith M..
México Editorial Azteca 1962 .
xii, 317 p. , Translation of : Detection and prevention of business losses.

By Sheen, Fulton John.
Mexico Editorial Azteca 1955 .
334 [1] p. , Translation of: the Mystical body of Christ.

By Walker, Kenneth Macfarlane.
Mexico Editorial Azteca S.A. 1964 .
254 p. , Translation of: Love, marrigage and the family. 22 cm..

By Leon, Ricardo.
México Editorial Azteca 1956 .
273 p. 20 cm..

By Unamuno y Jugo, Miguel de,.
México Editorial Azteca 1961 .
254 p.