@book{4571,
	author = {Russell, Bertrand,},
	title = {Introduction to mathematical philosophy  /},
	publisher = {G. Allen & Unwin, ltd.;},
	year = {1919.},
	series = {Library of philosophy, ed. by J.H. Muirhead},
	address = {London :},
	note = {"First published May 1919. Second edition April 1920. Reprinted May 1924."}
}