Upper portion of the verso of the title page.
No later impressions are indicated below the 'First published in 1955' line.

First published in 1955

This book is copyright under the Berne Convention.  Apart from any fair dealing for the purposes of private study, research, criticism or review, as permitted under the Copyright Act 1911, no portion may be reproduced by any process without written permission.  Enquiry should be made to the publisher.   © George Allen and Unwin Ltd.