1. The Principle of Contradiction and Symbolic Logic. Issue 2 (2nd April 2020) Authors: Łukasiewicz, Jan; Trybus, Adam; Linsky, Bernard Journal: History and philosophy of logic Issue: Volume 41:Issue 2(2020) Page Start: 154 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗