CORNELIUS A. TOBIAS 

 University of Cal i form a 



RAYMOND E. ZIRKLE 

 Uni vers iTy of Chicago 



JOSEPH BUTTS 

 AtofTiic Energy Ccm/ni ssion 



JOHN S. COLEMAN 



National Academy of Sciences- 

 National Research) Council 



DOUGLAS WORE 



Atomic Energy Commi ss i en 



IX 



