A statistical analysis is made of the professional literature of librarians and information scientists in an attempt to uncover the patterns of information flow and to evaluate the abstracting services provided for information workers. Citation analysis of some English language information science journals throws light on the principal sources used by British and American information scientists and the linguistic and national biases in the citations given. The growth of the subject matter published in the field of information science is displayed. Five abstracting services are evaluated. Their scope in terms of the language, country of origin, subject matter and format of the material selected and abstracted is determined. Coverage is assessed in comparison with three bibliographies in this subject area. Currency is determined from NRLSI acquisition dates. Key journals are found from productivity analysis of the abstracted journals. Conclusions are drawn as to the adequacy of the present services and suggestions made for possible improvements.
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