Complete classification of the triad systems on fifteen elements.
By: By H. S. White, F. N. Cole, and Louise D. Cummings.
Contributors: Cole, F. N. 1861-; Cummings, Louise Duffield, 1872-
Series: Memoirs of the National academy of Sciences. vol. 14, 2d memoir; Memoirs of the National Academy of Sciences -- v. 14, no. 2.
Publisher: Govt. Print. Off.
Published: 1919
Place of publication: [Washington
Language: eng
Number of pages: 28
Subjects: Combinations.
Other titles: Triad systems.
Notes: Running title: Triad systems.

Issued with Memoirs, v. 14.