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First published 1972
Second Impression 1973
Second Edition 1972 and 1978 © The Institute of Economic Affairs
Third Edition 2009 © The Institute of Economic Affairs
New Material 2009 © Ludwig von Mises Institute, Creative Commons 3.0

All rights reserved. Written permission must be secured from the publisher to use or reproduce any part of this book, except for brief quotations in critical reviews or articles.

ISBN: 978-1-933550-40-4