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Liu, S.; Svenonius, E.: DORS: DDC online retrieval system (1991)
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Rozov, B.: About patent classification (1993)
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Slavic, A.; Cordeiro, M.I.: Core requirements for automation of analytico-synthetic classifications (2004)
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Tereshchenko, S.S.: Struktury dannykh v avtomatizirrovannykh informatsionnykh sistemakh (1997)
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Kreslins, K.; O'Brien, A.; Smith, I.A.: Online public access catalogues in Latvia : strategies for subject access (1994)
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