http://es.wikipedia.org/wiki/Biblia#Traducciones_de_la_Biblia_al_espa.C3.B1ol

Antony: The differences between catholic and protestant bibles are Not so big, but has to do with certain "books" that are included in one version (I don't remember in which one) and not in the other. The name "Santa Biblia" (Holly Bible) is widely used by both Protestant and Catholics, so this is not a good guide for you. I'd say that you need to find, in the very first pages of the bible one little statement in Latin, the Imprimatur, which is the authorization released by the bishop: It should say something like " Nihil Obstat. Imprimatur", which by the way means : Nothing against. Print it . ¡Buena suerte!

biblia catolica, santa biblia