The principles of mathematics /
by Bertrand Russell.
- 2nd ed.
- London : George Allen & Unwin, c1937 [Impression 1956-1964]
- xxxix, 534 p. ; 24 cm.
The material on the subject originally intended to form the 2d volume was later developed into an independent work: Principia mathematica, by A.N. Whitehead and Bertrand Russell, in 3 volumes.