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Fugmann, R.: ¬The complementarity of natural and indexing languages (1982)
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Fugmann, R.: ¬The complementarity of natural and controlled languages in indexing (1995)
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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.: ¬The complementarity of natural and index language in the field of information supply : an overview of their specific capabilities and limitations (2002)
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Fugmann, R.: ¬The complementarity of natural and indexing languages (1985)
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