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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.: SAP: a new way to produce subject description of books (1981)
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Wormell, I.: Factual data retrieval according to SAP-technique (1983)
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Wormell, I.: Factual data retrieval according to SAP technique (1983)
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Ingwersen, P.; Wormell, I.: Means to improve subject access and representation in modern information retrieval (1988)
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Wormell, I.: Subject Access Project : the use of book indexes for subject retrieval systems in libraries (1981)
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Wormell, I.: Subject access redefinied : how new technology changes the conception of subject representation (1994)
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