The license is the Creative Commons BY-NC-SA 4.0 license found here: https://creativecommons.org/licenses/by-nc-sa/4.0/
This is also listed on the last page of the PDF.
The license is the Creative Commons BY-NC-SA 4.0 license found here: https://creativecommons.org/licenses/by-nc-sa/4.0/
This is also listed on the last page of the PDF.