The Texas Pan American Series is published with the assistance of a revolving publication fund established by the Pan American Sulphur Company and other friends of Latin America in Texas. Publication of this book was also assisted by a grant from the Rockefeller Foundation through the Latin American translation program of the Association of American University Presses.

International Standard Book Number 0-292-70115-2
Library of Congress Catalog Card Number 73-156346
Copyright © 1971 by the University of Texas Press
All rights reserved

ISBN 978-0-292-76265-7 (library e-book)
ISBN 978-0-292-76266-4 (individual e-book)

doi: 10.7560/701151