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  • × year_i:[1980 TO 1990}
  1. Sweeney, R.: Dewey Decimal Classification : edition 20 (1989) 8.70
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  2. Sifton, P.: Workbook for DDC20 : a practical introduction to Dewey Decimal Classification; Edition 20; 1989 (1989) 8.70
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  3. Dewey, M.: Dewey Decimal Classification and relative index (1989) 8.70
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  4. Berman, S.: DDC 20 : the scam continues (1989) 8.70
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