The DSA is a voluntary, nonprofit educational corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.
240-40
Editor:
Henry Churchman
Associate Editor:
Volume:
24
Issue:
0
Whole Number:
40
Year:
1185
Subject:
Julian dates on cover; Discussions of the “navinaut”; dozenal distances and time