Can anyone tell me where I can get Journal Impact Factors from for the years 1990-93 (preferably for free) . I have looked at some sites on the Web, where various people have made there own lists, but none of them go back past 1994.
The journals I am interested in are:
Analytical Chemistry, Analyst, Fresenius' Journal of Analytical Chemistry, Journal of Chromatography A, Trends in Analytical Chemistry and Analytica Chimica Acta
Thanks
Alison Wells
LGC Business Information Centre
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