Table 4. Scientific literature in selected fields as a percent of total literature produced by 

 major developed nations, 1965-71 



Selected field and year 



Total 

 literature 



United United 



States Kingdom Germany France U.S.S.R. 



Ottier and 

 Japan unknown 



Number 



Percent of total 



t\/lathematics 



1965 



1967 



1969 



1971 



Physics and geophysics 



1965 



1967 



1969 



1971 



Chemistry and metallurgy 



1965 



1967 



1969 



1971 



Molecular biology 



1965 



1967 



1969 



1971 



Systematic biology 



1969 



1971 



Psychology 



1965 



1967 



1969 



1971 



Engineering 



1965 



1967 



1969 



1971 



Economics 



1965 



1967 



1969 



1971 



' Complete data not available for U S S.R 



Source; Computer Horizons. Inc , Development of U.S- and International Indicators of the Quantity and Quality of Sclentiftc Literature. 

 September 1972. 



104 



