PERGAMON PRESS INC. 

 122 East 55th Street, New York 22, N.Y. 

 P.O. Box 47715, Los Angeles, California 



PERGAMON PRESS LTD. 



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 4 & 5 Fitzroy Square, London W.l 



PERGAMON PRESS S.A.R.L. 

 24 Rue des Ecoles, Paris Ve 



PERGAMON PRESS G.m.b.H. 

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Copyright 



© 

 1960 



Pergamon Press Ltd. 



Library of Congress Card No. 60-9644 



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THE GARDEN CITY PRESS LIMITED 



LETCHWORTH, HERTFORDSHIRE 



