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  1. Bellardo, T.: Subject indexing : an introductory guide (1991) 9.75 
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  2. Satija, M.P.; Agrawal, S.P.: Book numbers : some indian methods (1990) 9.75 
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  3. Cleveland, D.B.; Cleveland, A.D.: Introduction to abstracting and indexing (2001) 9.75 
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  4. Cleveland, D.B.; Cleveland, A.D.: Introduction to abstracting and indexing (1990) 9.75 
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  5. Fugmann, R.: Theoretische Grundlagen der Indexierungspraxis (1992) 9.75 
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  6. Classification research for knowledge representation and organization : Proc. of the 5th Int. Study Conf. on Classification Research, Toronto, Canada, 24.-28.6.1991 (1992) 9.75 
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