Seal of the DSA
Dozenal Society of America
Promoting base twelve and alternative base mathematics
Support the DSA
Follow Us
Icon for DSA's X Icon for DSA's Facebook Icon for DSA's RSS
Share This Page
Icon for sharing via X Icon for sharing via Facebook Icon for sharing via email
The Dozenal Society of America
The DSA is a voluntary, nonprofit education 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.

The Duodecimal Bulletin

◀️ Issue: Whole Number 21z (25d) | Vol. 10z (12d) No. 2 | Year 1170z (1956d) ▶️



Click to view PDF

Editor: Ralph Beard

Contents:

  • Douze Notre Dix Futur | Jean Essig
    • Book review by F. Emerson Andrews
  • The Dozenal (Duodecimal) Number System | O. R. Tucker
  • Henry Martyn Parkhurst, obituary | Ralph H. Beard
  • Duodecimal Notation | Henry Martyn Parkhurst
  • Comments on Douze Notre Dix Futur and Our Seal | H. C. Churchman
  • Excerpt from a Letter to The Editor | Group Captan G. Struan Marshall
  • The 1957 Annual Meeting
  • Want Ad
  • Counting in Dozens