License
- All rights reserved11,421
- Attribution 4.0 (CC BY 4.0)933
- Attribution 3.0 United States249
- Attribution-NonCommercial 4.0 (CC BY-NC 4.0)149
- CC0 1.0 Universal109
- Public Domain Mark 1.0100
- Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND 4.0)98
- Attribution-NonCommercial-NoDerivs 3.0 United States78
- Attribution-ShareAlike 4.0 (CC BY-SA 4.0)43
- Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0)39
- Attribution-NonCommercial-ShareAlike 3.0 United States21
- Attribution-NoDerivs 3.0 United States15
- Attribution-NoDerivatives 4.0 (CC BY-ND 4.0)14
- Attribution-NonCommercial 3.0 United States11
- Attribution-ShareAlike 3.0 United States4
- Apache 2.01
- MIT1