14 DAY USE 



RETURN TO DESK FROM WHICH BORROWED 



H SCIENCES LIBRARY- 



This book is due on the last date stamped below, or 



on the date to which renewed. 

 Renewed books are subject to immediate recall. 



JUL28 



LD 21-50m-4,'63 

 (D6471slO)476 



General Library 



University of California 



Berkeley 



