that might leave a vacuum In the surveillance of Industrial development at this 
time. 
To sum up, there are two actions I would like RAC to take: (1) approval of the RAC 
proposal for revision of the Guidelines; (2) a further addition to the Guidelines 
that would specify consideration of problems connected with production scale 
operation and advice to the appropriate regulatory agencies as proper RAC functions. 
Sincerely yours 
Allan Campbell 
Professor of Biological Sciences 
AC:shm 
[ 634 ] 
