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Liu, S.; Svenonius, E.: DORS: DDC online retrieval system (1991)
5.64
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Svenonius, E.; Liu, S.; Subrahmanyam, B.: Automation of chain indexing (1992)
5.64
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Liu, S.: Decomposing DDC synthesized numbers (1997)
5.64
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Liu, S.: Decomposing DDC synthesized numbers (1996)
5.64
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