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.
Duodecimal Bulletin: Pictorial Synopsis
Below are links showing the various stages of the
development of the Bulletin, in groups of a
dozen issues. Each is preceded by a brief summation of
the unquade by our current editor, Michael deVlieger,
who offers a fascinating insight into the history of our
Society. It is interesting to consider this aspect along
with the fascinating mathematical considerations that are
contained in these pages.
00-0E
1161-1164
10-1E
1165-116E
20-2E
1170-1175
30-3E
1176-1184
40-4E
1185-1194
50-5E
1195-1198
60-6E
1198-11X0
70-7E
11X1-11X6
80-8E
11X7-11E0
90-9E
11E1-11E7
X0-XE
11E7-