Penguin Books Ltd, Harmondsworth, Middlesex
U.S.A.: Penguin Books Inc, 3300 Clipper Mill Road, Baltimore 11, Md
AUSTRALIA: Penguin Books Pty Ltd, 762 Whitehorse Road
Mitcham Victoria
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First published 1960
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Copyright © Johannes Brøndsted, 1960
Made and Printed in Great Britain by Cox and Wyman Ltd, London, Reading & Fakenham Photogravure plates by Clarke & Sherwell Ltd, Northampton