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Earle, R.E.; Berry, R.; Nichols, M.C.: Indexing online information (1996)
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Gagan, D.: Scanning: a survival guide : 5: text scanning - OCR and quality of text (1993)
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Ward, M.L.: ¬The future of the human indexer (1996)
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Ramesh Babu, B.: Some thoughts on requirements for a good index to a book (1991)
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Stanley, T.: Alta Vista vs. Lycos (1996)
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