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New, G.; Trotter, R.: ¬La revisione delle scienze della vita per la ventunesima Dewey (1997)
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Gruppo di lavoro della Bibliografia nazionale italiana: Dewey da 20 a 21 (2001)
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Crocetti, L.; Fagiolini, A.: Classificazione decimale Dewey edizione aggiornata a DDC21 (2001)
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