Las ocho columnas de la prosperidad.
By: Traducción directa del inglés; edición preparada por Emilio Bosch Bierge.
Contributors: Bosch Bierge, Emilio.
Publisher: Sintes
Published: 1915
Place of publication: Barcelona
Language: spa
Number of pages: 164
Subjects: Conduct of life
Notes: Translation of Eight pillars of prosperity.