ISBN-13: 9789962690566 / Hiszpański / Twarda / 2013 / 200 str.
No. 1 in the Valle de AntOn series. Set in an emerging land where an imminent betrayal can determine the fate of the world, The Enigma of the Spheres is a novel brimming with magical actions and dilemmas, and where the fundamental forces of good and evil that underpin the world must confront one another. Bilingual young adult novel with a reader's guide. Suitable for classroom use.