Questions and answers discuss the prehistoric world, music, spiders and other invertebrates, astronomy, endangered and extinct animals, ancient Egypt, science, transportation, the ocean, and inventions. Title: 500 Preguntas y Respuestas / 500 Questions and Answers Author: Gaff, Jackie Publisher: Lectorum Pubns Publication Date: 2012/01/01 Number of Pages: 330 Binding Type: HARDCOVER Library of Congress: bl2012031292