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Black, G.: Videotex at the crossroads (1993)
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Austin, D.L.: Videodiscs, software indexes, and reference services (1991)
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May, G.: Pictorial history online : a new way to research our past (1989)
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Bednarek, M.: Intellectual access to pictorial information (1993)
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Jörgensen, C.: ¬The applicability of selected classification systems to image attributes (1996)
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