PUBLICATIONS OF RUSSELL SAGE FOUNDATION

Russell Sage Foundation was established in 1907 by Mrs. Russell Sage for the im-
provement of social and living conditions in the United States. In carrying out its
purpose the Foundation conducts research under the direction of members of the
staff or in close collaboration with other institutions, and supports programs de-
signed to develop and demonstrate productive working relations between social
scientists and other professional groups. As an integral part of its operation, the
Foundation from time to time publishes books or pamphlets resulting from these
activities. Publication under the imprint of the Foundation does not necessarily im-
ply agreement by the Foundation, its Trustees, or its staff with the interpretations
or conclusions of the authors.

Russell Sage Foundation
230 Park Avenue, New York, N.Y. 10017

© 1973 by Russell Sage Foundation. All rights reserved.

Library of Congress Catalog Card Number: 72-83834

Standard Book Number: 87154-236-6 Printed in the United States of America by Connecticut Printers, Inc.,
Hartford, Connecticut

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