Evaluating Internet Resources
nCriterion #8:  Internal Search Capabilities
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nAn internal search engine with an easy user interface is highly desirable.  It should be capable of keyword or search string searching. 
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http://www.eb.com:180/

Encyclopedia Brittanica (note that it says that it contains ALL articles from the printed editions; but for illustations, biographies, yearbooks, etc., it doesn't say that it contains ALL, so you should assume that many are missing.)

http://www.bu.edu/library/refshelf.html
Mugar Library's "reference shelf" provides a link to WWWebster Dictionary, the online version of Merriam Webster's Collegiate Dictionary.  Notice that Mugar clearly states that the dictionary is an online version of the 10th edition of Merriam Webster's Collegiate Dictionary.  But when you link to the dictionary itself (http://www.m-w.com/netdict.htm), it's a lot tougher to find out what edition is contained and whether it's complete.


http://www.ahd.com/
American Hospital Directory clearly states how the information is gathered.  States that it includes infomration on MOST hospitals.  When you enter the "free services" section, it immediately presents a notice regarding contents, and a disclaimer.