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  • × classification_ss:"025.3 / dc19"
  1. Fetters, L.K.: ¬A guide to indexing software (1989) 0.08 
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    DDC
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  2. 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) 0.07 
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    Classification
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    DDC
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  3. Garfield, E.: Citation indexing : its theory and application in science, technology, and humanities (1979) 0.05 
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    Classification
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    DDC
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