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theme_ss:"Benutzerstudien"
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theme_ss:"Preserved Context Index System (PRECIS)"
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year_i:[1980 TO 1990}
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- author's%3a%21st%c3%büchlein%2c E. u. K. weber %28Bearb.%29%22 1
- author's%3a%21st%c3%büchlein%2c E. u. K. weder %28Bearb.%29%22 1
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Peters, H.J.: User reactions to PRECIS indexes (1981)
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