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theme_ss:"Preserved Context Index System (PRECIS)"
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theme_ss:"Verbale Doksprachen im Online-Retrieval"
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language_ss:"e"
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Dykstra, M.: PRECIS in the online catalog (1989)
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DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984)
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