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  • × year_i:[1990 TO 2000}
  • × author_ss:"Leydesdorff, L."
  1. Leydesdorff, L.: Why words and co-word cannot map the development of the science (1997) 0.02
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    Source
    Journal of the American Society for Information Science. 48(1997) no.5, S.418-427
    Year
    1997