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All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any in- formation storage or retrieval systems, without permission in writing from the publisher. For information contact: Chelsea House An imprint of Infobase Publishing 132 West 31st Street New York NY 10001 Library of Congress Cataloging-in-Publication Data Dennett, Preston E., 1965- UFOs and aliens / Preston Dennett ; consulting editor, Rosemary Ellen Guiley. p. cm. — (Mysteries, legends, and unexplained phenomena) Includes bibliographical references and index. ISBN-13: 978-0-7910-9384-9 2007029621 Chelsea House books are available at special discounts when purchased in bulk quantities for businesses, associations, institutions, or sales promotions. Please call our Special Sales Department in New York at (212) 967-8800 or (800) 322-8755. Text design by James Scotto-Lavino Cover design by Ben Peterson Cover illustration by Robert M. Place All links and Web addresses were checked and verified to be correct at the time of pub- lication. Because of the dynamic nature of the Web, some addresses and links may have changed since publication and may no longer be valid. UFOS AND ALIENS Copyright © 2008 by Infobase Publishing You can find Chelsea House on the World Wide Web at http://www.chelseahouse.com Printed in the United States of America Bang EJB 10987654321 This book is printed on acid-free paper.