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Sewell, W.; Teitelbaum, S.: Observations of end-user online searching behavior over eleven years (1986)
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Harpring, P.: Introduction to controlled vocabularies : terminology for art, architecture, and other cultural works (2010)
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Chowdhury, G.G.; Neelameghan, A.; Chowdhury, S.: VOCON: Vocabulary control online in MicroIsis databases (1995)
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Feng, S.: ¬A comparative study of indexing languages in single and multidatabase searching (1989)
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