COPYRIGHT © 1972 BY INDIANA UNIVERSITY PRESS

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 and recording, or by any information storage and retrieval system, without permission in writing from the publisher. The Association of American University Presses Resolution on Permissions constitutes the only exception to this prohibition.

Published in Canada by Fitzhenry & Whiteside Limited,

Don Mills, Ontario

Library of Congress catalog card number: 72-75390

ISBN: 0-253-31080-6

Manufactured in the United States of America