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Saracevic, T.; Kantor, P.B.: Studying the value of library and information services : Part I: Establishing a theoretical framework (1997)
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Saracevic, T.; Kantor, P.B.: Studying the value of library and information services : Part II: Methodology and taxonomy (1997)
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Kantor, P.B.; Saracevic, T.: Quantitative study of the value of research libraries : a foundation for the evaluation of digital libraries (1999)
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