Bibliography (4):

1. https://www.rachellaudan.com/2011/12/more-on-grinding-maize.html

2. https://kennedy.byu.edu/wp-content/uploads/2016/02/IFS_inquiry1.pdf#page=71

3. Millers and Grinders: Technology and Household Economy in Meso-America

4. https://www.amazon.com/Stone-Life-Production-Southampton-Archaeology/dp/0992633605