@book{4723,
	author = {Russell, Bertrand,},
	title = {Principles of mathematics},
	publisher = {Routledge ;},
	year = {1937.},
	address = {London ;},
	edition = {2nd ed.},
	note = {Includes 16 previously unpublished articles by Russell and the draft manuscript of The Principles of mathematics.},
	url = {http://www.loc.gov/catdir/enhancements/fy0648/93003505-d.html}
}