Offers detailed abstracts and allows searcher to see keywords in context. Select from Simple Search, Weighted Search and Power Search. A very powerful search engine provided by Digital. Offers detailed abstracts and probes deeply into content. This site offers very strong word searching of more than 100,000 articles, books and reports exploring educational topics - all published since 1986.
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The search options provide more powerful search strategies than most alternatives. Select the best categories or conduct a search for keywords and then check out the resulting lists. High density might mean that 25-30 per cent of the items are worth keeping. Density will tend to run that high on Yahoo or the Virtual Library. Items are evaluated prior to placement on first two lists.