14 DAY USE 



RETURN TO DESK FROM WHICH BORROWED 



EARTH 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. 



4AAR-&-6-49W 



MAY - 3 1977 



General Library 



University of California 



Berkeley 



LD 21-40m-5,'6S 



(F4308slO)476 



