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Yi, K.; Chan, L.M.: Revisiting the syntactical and structural analysis of Library of Congress Subject Headings for the digital environment (2010)
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Chan, L.M.; Hodges, T.: Subject cataloguing and classification : the late 1980s and beyond (1990)
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Gerhard, K.H.; Su, M.C.; Rubens, C.C.: ¬An empirical examination of subject headings for women's studies core materials (1998)
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