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Pack, T.: Digital circles of knowledge (1995)
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Carlton, T.: I want an electronic bookstore! (1993)
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Clements, J.; Nicholls, P.: ¬A comparative survey of multimedia CD-ROM encyclopedias (1995)
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Jascó, P.: General encyclopedias on CD-ROM : a look at the 1995 editions (1995)
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Burg, B.; Kautzman, A.M.: Virtual knowledge : the best buys in 1998 CD-ROM encyclopedias (1998)
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