Tratado de Psicologia Revolucionaria By Weor, Samael Aun Books / Paperback Social Science › Psychology & Psychiatry Publisher: CSS Editores, January 1975 Price $18.95 Free Shipping Send to a friend Collectible - Good First Edition First edition copy. Collectible - Good. Spanish. (applied psychology, books in Spanish) $18.95 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.