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Ingwersen, P.; Wormell, I.: Modern indexing and retrieval techniques matching different types of information needs (1989)
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- Source
- International forum on information and documentation. 14(1989), S.17-22
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Wormell, I.: Success factors for fee-based information services (1996)
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- Footnote
- Rez. in: NfD. 48(1997) H.2, S.113-114 (W. Schwuchow); Managing information. 4(1997) no.4, S.38 (J. Webb)