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- PUB14
- Creative Commons - Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)5
- http://creativecommons.org/licenses/by-nc-sa/4.0/5
- Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)3
- http://creativecommons.org/licenses/by-nc-sa/3.0/3
- Creative Commons - Attribution 4.0 International (CC BY 4.0)2
- Mozilla Public License 2.02
- Public Domain Dedication (CC Zero)2
- http://creativecommons.org/licenses/by/4.0/2
- http://creativecommons.org/publicdomain/zero/1.0/2
- http://opensource.org/licenses/MPL-2.02
- Not specified1