The Ordinary Language Tree.by Fred Sommers;Predicability.by Fred Sommers;Dualism and Categories.by L. R. Reinhardt;Sommers' Tree Theory, A Reply to de Sousa.by David Massie;Equivocality, a Discussion of Sommers' Views.by Susan Haack;Sommers' Rule and Equivocality.by R. van Straaten;On Sommers' Logic of Sense and Nonsense.by Dan Passell;Sommers's Rules of Sense.by A. G. Elgood