https://dozenal.org/
The Dozenal Society of America is an international non-profit dedicated to researching, using, and teaching about dozenals (duodecimals) and other non-decimal...
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https://www.dozenalmath.com/book-online
Discover the future of math with base-12 geometry! Welcome educators, students, researchers and mathematicians interested in Base-12. Our site offers a new...
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