![](/img/cover-not-exists.png)
E1775
George Purdy, J. M. Perry, F. A. Butter, Jr. and M. S. KlamkinVolume:
73
Language:
english
Journal:
The American Mathematical Monthly
DOI:
10.2307/2315496
Date:
May, 1966
File:
PDF, 117 KB
english, 1966