Aeromadrid edit 2 books written by J Vega Muņoz called cuestionario bilingue de comunicaciones aeronauticas and comunicaciones aeronauticacs.
The former takes the form of mulitple choice exam questions with English at the front and the corresponding questions in Spanish at the rear. The latter is the PPL communications course in Spanish, with a glossary of words into English at the back. The former is cheaper at 9,50 and possibly more suitable for what you want. The latter comes in both English and Spanish, so make sure you get the Spanish one otherwise you may not get the glossary (canīt be sure, I have the Spanish one).
You can buy either on their web site
http://tienda.aeromadrid.com/index.php?cPath=204_207