License
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- Attribution 3.0 United States189
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- Public Domain Mark 1.068
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- Attribution-NonCommercial-NoDerivs 3.0 United States51
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- Attribution-ShareAlike 4.0 (CC BY-SA 4.0)32
- Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0)26
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- Apache 2.01
- Attribution-ShareAlike 3.0 United States1