Esther M. Zimmer Lederberg
    
   CCCP five year plan: Rate of change of production of products
    
   Tractors, steel, transportation, etc.
    
   Different countries: USSR, Great Britain, Germany, France, USA
 
   The first derivative of predicate including a variable for time can 
   be used to measure the rate of change of social produced products 
   such as tractors, comparing these rates of changes between different
   countries.
 
  
  Click image or caption to return 
 
  
 
       
  
   
     Return
   
  
 
  
      Back