80 years or more after author(s) death (Q29940641)
copyright protection duration of 80 years from the death of the author(s)
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aliases 80 years post mortem auctoris
 80 years p.m.a.
 80 years pma
 author(s) died more than 80 years ago
 PD-old-80
description copyright protection duration of 80 years from the death of the author(s)