Copyright Review Management System renewals by year, data from Table 2 of the article "How Large is the ‘Public Domain’? A comparative Analysis of Ringer’s 1961 Copyright Renewal Study and HathiTrust CRMS Data."
Date made availableAug 18 2016
PublisherUniversity of Illinois at Urbana-Champaign


  • copyright renewals
  • HathiTrust
  • copyright

Research Output

  • 1 Review article
  • Cite this

    Wilkin, J. P. (Creator) (Aug 18 2016). CRMS Renewals by Year. University of Illinois at Urbana-Champaign. 10.13012/B2IDB-0710473_V1