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"How Large Is the "Public Domain"? A Comparative Analysis of Ringer's 1961 ..."
John P. Wilkin (2017)
- John P. Wilkin:
How Large Is the "Public Domain"? A Comparative Analysis of Ringer's 1961 Copyright Renewal Study and HathiTrust CRMS Data. Coll. Res. Libr. 78(2): 201-218 (2017)
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