Spares 



A Symposium held at Allerlon Park, Illinois 

 October 11-12, 1956 under the auspices of 

 the University of Illinois and with the 

 support of the Office of Naval Research. 



EDITED BY 



H. Orin Halvorson 



PUBLICATION 



No. 5 



• 



1957 



AMERICAN INSTITUTE OF BIOLOGICAL SCIENCES 

 WASHINGTON, D. C. 



