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author_ss:"Bollmann-Sdorra, P."
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theme_ss:"Retrievalstudien"
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language_ss:"d"
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year_i:[1990 TO 2000}
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Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm