Collected papers of Charles Sanders Peirce : vol 6 / Charles S Peirce, .edited by Charles Hartshorne and Paul Weiss. Works. 1931 Peirce, Charles S. Hartshorne, Charles, 1897-2000. Weiss, Paul, 1901-2002. Burks, Arthur W. (Arthur Walter), 1915-2008. Philosophy. 104 PEC Vols. 7-8 edited by Arthur W. Burks. Includes indexes. Cambridge : Harvard University Press, 1935. 1935. 1935 Text v. 6 : eng