Gulley, Halbert E. Discussion, conference, and group process. / - New York : Holt, [1966]. - 388 p. 21 cm. Includes bibliography. LCCN: 60008595 Subjects--Topical Terms: Discussion. LC Class. No.: BF637.D5 / G8 Dewey Class. No.: 374.22 / GUD 1966