Most of the time, one does not need to fight with those old cards in the library, nor to lose the whole day sitting in a specific library searching their databases. Now you can conduct your research from your office, surfing on the web.
British Library (@@@@@)
A very useful source of data.
Amazon (@@@@@)
Very good way to find the latest books.
The Library of Congress (@@@@@)
A classical American web site.
Institute of Advanced Legal Studies (@@@@)
Very useful source for research. The IALS was founded in 1947 as part of the University of London.
British Library of Political & Economic Science (@@@@@)
Excellent site. Belongs to the London School of Economics and Political Science.
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