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Kautzman, A.M.; Burg, B.: Rounding up the ROMs : selected CD-ROM guides and directories (1997)
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Boettcher, J.; Kingma, B.R.: Telephone directories : alternatives to print (1994)
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Rosen, J.; Snow, C.E.: Internet resources for ready reference (1997)
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Nicholls, P.: Multimedia and CD-ROM Directory 1998 (1998)
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Mood, T.A.: Of sundials and digital watches : a further step toward the new paradigm of reference (1994)
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