Table 1-4. Percent of the scientific literature' citing countries 

 other than the author's own country, by selected fields,^ 1973 



Fields 



Chemistry 



Physics 



Biology and 

 biomedical research . 



Engineering 



Clinical medicine 



Mathematics 



Earth & space sciences 

 Psychology 



Eight field total 



' Based on 2.121 of the journals in the Science Citation Index for 1973 Included is the literature of the first six countries ranKed by the number of their 

 scientific publications. United States. United Kingdom. West Germany, France. US S.R. and Japan 

 ' See Appendix table l-7a for the description of fields and subfields The social sciences are excluded because comparable data are not available. 



SOURCE: Computer Horizons. Inc., Indicators ol ttie Quantity and Quality ol the Scientific Literature, 1975 (A study commissioned specifically for this 

 report) 



Table 1-5. Participation in 



international scientific congresses, 



by the United States and other countries, 



1960-74 



Year 



Total U.S. Non-U.S. 



participants participants participants 



1 960-62 

 1963-65 

 1966-68 

 1969-71 

 1972-74 



SOURCE: National Academy of Sciences, special tabulations, 



157 



