Recommended Citation
O'Leary, Daniel J.
(1988)
"The Propositional Logic of Principia Mathematica and Some of Its Forerunners,"
Russell: the Journal of Bertrand Russell Studies:
Vol. 8:
Iss.
1, Article 10.
Available at:
http://digitalcommons.mcmaster.ca/russelljournal/vol8/iss1/10