consent of the publisher. Library of Congress Catalog Card Number: 2007007922 ISBN: 978–1–59158–408–7 978–1–59158–406–3 (pbk.) First published in 2007 Libraries Unlimited, 88 Post Road West, Westport, CT 06881 A Member of the Greenwood Publishing Group, Inc. www.lu.com Printed in the United States of America
The paper used in this book complies with the Permanent Paper Standard issued by the National Information Standards Organization (Z39.48-1984). 10 9 8 7 6 5 4 3 2 1
To our grandchildren