@book{8680,
	author = {Whitehead, Alfred North and Russell, Bertrand and Bertrand, Russell ; jt. auth.},
	title = {Principia mathematica to *56},
	publisher = {Cambridge University Press},
	year = {1997},
	series = {Cambridge mathematical library},
	address = {Cambridge},
	edition = {2nd.},
	note = {"Purchased under NBHM grant for the year 1997-98"}
}