Penguin Books Ltd, Harmondsworth, Middlesex
U.S.A.: Penguin Books Inc., 3300 Clipper Mill Road, Baltimore 11, Md
CANADA: Penguin Books (Canada) Ltd, 47 Green Street,
Saint Lambert, Montreal, P. Q.
AUSTRALIA: Penguin Books Pty Ltd, 762 Whitehorse Road,
Mitcham, Victoria
SOUTH AFRICA: Penguin Books (S.A.) Pty Ltd, Gibraltar House,
Regent Road, Sea Point, Cape Town
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First published in book form 1955
Made and printed in Great Britain by C. Nicholls & Company Ltd