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Fugmann, R.; Nickelsen, H.; Nickelsen, I.; Winter, J.H.: Representation of concept relations using the TOSAR system of IDC : treatise 3 on information retrieval theory (1974)
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Fugmann, R.: Learning the lessons of the past (2004)
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Fugmann, R.: On the practice of indexing and its theoretical foundations (1980)
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Fugmann, R.: ¬An interactive classaurus on the PC (1990)
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Fugmann, R.: Unusual possibilities in indexing and classification (1990)
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Fugmann, R.: ¬The analytico-synthetic foundation for large indexing & information retrieval systems : dedicated to Prof. Dr. Werner Schultheis, the vigorous initiator of modern chem. documentation in Germany on the occasion of his 85th birthday (1983)
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Fugmann, R.: Representational predictibility : key to the resolution of several pending issues in indexing and information supply (1994)
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Fugmann, R.: Subject analysis and indexing : theoretical foundation and practical advice (1993)
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Fugmann, R.: ¬The empirical approach in the evaluation of information systems (1999)
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Fugmann, R.: Galileo and the inverse precision/recall relationship : medieval attitudes in modern information science (1994)
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Fugmann, R.: Bridging the gap between database indexing and book indexing (1997)
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Fugmann, R.: ¬The complementarity of natural and indexing languages (1985)
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