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- author's%3a%22Rijke%2c M. de%22 2
- authors%3a%22Rijke%2c M. de%22 3
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Ingwersen, P.; Wormell, I.: Modern indexing and retrieval techniques matching different types of information needs (1989)
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- 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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