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- policy:public781
- http://creativecommons.org/publicdomain/mark/1.0/724
- unknown230
- http://creativecommons.org/licenses/by-nc-sa/4.0/58
- PUB3
- Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)1
- Creative Commons - Attribution 4.0 International (CC BY 4.0)1
- Creative Commons - Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)1
- Rights holder: Archiv Jana Patočky, z.s.1
- http://creativecommons.org/licenses/by-nc-sa/3.0/1
- http://creativecommons.org/licenses/by/4.0/1
- open access1