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Fraser, C.: Mathematics in library and review classification systems : an historical overview (2020)
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Heuvel, C. van den: Web 2.0 and the Semantic Web in research from a historical perspective : the designs of Paul Otlet (1868-1944) for telecommunication and machine readable documentation to organize research and society (2009)
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Lund, N.W.; Skare, R.: Document theory (2009)
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Lund, N.W.; Skare, R.: Document theory (2009)
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Cooksey, E.B.: George Boole : the man behind 'and/or/not' (1997)
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