PEIRCE, CHARLES SANDERS.
Collected papers. Vol.4: The simplest mathematics. Edited by Charles Hartshorne & Paul Weiss.
PEIRCE, CHARLES SANDERS. Collected papers. Vol.4: The simplest mathematics. Edited by Charles Hartshorne & Paul Weiss. © 27Dec33; A67867. President & Fellows of Harvard College (PPW of C. S. Peirce); 22Mar61; R272928.
President & Fellows of Harvard College|PPW of C. S. Peirce