A volume in the Haney Foundation Series, established in 1961
with the generous support of Dr. John Louis Haney.

Copyright © 2017 University of Pennsylvania Press

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University of Pennsylvania Press
Philadelphia, Pennsylvania 19104-4112
www.upenn.edu/pennpress

Printed in the United States of America on acid-free paper
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Library of Congress Cataloging-in-Publication Data
ISBN 978-0-8122-4871-5