Lewis, C. I. Alternative systems of logic. (English) Zbl 0005.33703 Monist 42, 481-507 (1932). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents Keywords:foundations, philosophy, logic PDFBibTeX XML