Title: Preludio a la Fundación (Prelude to Foundation), Author: Isaac Asimov
Title: Jupiter: El sistema solar, Author: Isaac Asimov
Title: Global Space Programs: Past and Present, Author: Isaac Asimov
Title: Bóvedas de acero (Serie de los robots 2), Author: Isaac Asimov
Title: The Sun, Author: Richard Hantula
Title: Space Junk, Author: Various
Title: UFOs, Author: Richard Hantula
Title: Los robots del amanecer (Serie de los robots 4), Author: Isaac Asimov
Title: Why Do Stars Twinkle? (Ask Isaac Asimov Series), Author: Isaac Asimov