TT 70-50082 



Published Pursuant to an Agreement with 



THE SMITHSONIAN INSTITUTION 



and 



THE NATIONAL SCIENCE FOUNDATION, WASHINGTON, D. C. 



Copyright © 1970 



Israel Program for Scientific Translations Ltd. 



IPST Cat. No. 5724 



Translated by J. Salkind 



Printed in Jerusalem by Keter Press 

 Binding: Wiener Bindery Ltd., Jerusalem 



Available from the 

 U. S. DEPARTMENT OF COMMERCE 

 Clearinghouse for Federal Scientific and Technical Information 

 Springfield, Va. 22151 



V 11/ 7/3 



