Released in June 2008 by Thomson Reuters (formerly ISI), this list shows the top ten nations ranked according to output of published journal articles in 22 main fields of science (including general social sciences), based on papers indexed by Thomson Reuters (excluding books, book chapters, and articles published in non-Thomson Reuters-indexed journals) between January 1998 and February 29, 2008.
http://sciencewatch.com/dr/sci/08/jun15-08_1/
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