Gulley, Halbert E. Discussion, conference, and group process / Halbert E. Gulley. - 2d ed. - LOndon : Amerind publishing co. put., c1972 - x, 374 p. : ill. 24 cm. Includes index Subjects--Topical Terms: Interpersonal communication.Small groups. Dewey Class. No.: 374.22 / GUD 1972