Heny, Frank Ed. Linguistic categories : Auxiliaries and related puzzles. - Boston D. Reidel Pub. Co 1983 - xi,258p. - Synthese Lang. Lib. Texts & Studies In Ling. & Philo. 20 . Subjects--Topical Terms: Pxz7 Dewey Class. No.: Pxz7 / L3.2