Introduction to mass communications / Edwin Emery, Phillip H. Ault, Warren K. Agee. Emery, Edwin. Ault, Phillip H., jt. aut. Agee, Warren Kendall. jt. aut. Communication. P90 .E4 301.243 EMI Includes index. Bibliography: p. 395-419 New York : Dodd, Mead, 1960. 1960. 1960 Text 435 p. ; eng