Search (4 results, page 1 of 1)
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author_ss:"Hernon, P."
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theme_ss:"Informationsdienstleistungen"
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type_ss:"a"
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year_i:[1980 TO 1990}
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Hernon, P.; McClure, C.R.: Library reference service : an unrecognized crisis - a symposium (1987)
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Hernon, P.: Utility measures, not performance measures, for library reference service? (1987)
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Hernon, P.; McClure, C.R.: Quality of data issues in unobtrusive testing of library reference service : recommendations and strategies (1987)
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Hernon, P.; McClure, C.R.: Unobtrusive reference testing : the 55 percent rule (1986)
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