deep web search engines
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The terms invisible web , hidden web , and deep web all refer to the same thing: a massive storehouse of online data that the search engines don't capture.
Searching the invisible web (deep web, hidden web): WebLens search portal
for scientific information
is the most comprehensive scientific research tool on the web. With over 440 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free online reference, research & homework help. — Infoplease.com
Almanacs / Complete Subject List / Alphabetical Index A vast compendium of statistics and up-to-date facts and figures, on everything you need to know.
The Virtual Training Suite provides free Internet tutorials on using the Web for education and research, written by qualified lecturers and librarians.
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