General Reference Tools
Dictionaries
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A Web of On-Line Dictionaries Merriam Webster Online

Encyclopedia
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Concise Columbia Encyclopedia Encarta Encyclopedia
Bibliographic Database of the Conservation Information Network  

Encyclopedia
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Argus Clearinghouse Best Information on the Net
Indexes, Abstracts, Bibliographies, and Table of Contents Services Information Please Home Page
Internet Public Library's Ready Reference My Virtual Reference Desk: Ask An Expert
Thor+ Scholarly Commons @ Penn
ADB Open Access Repository

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