TY  - BOOK
AU  - Agee,Warren Kendall
AU  - Ault,Phillip H.
AU  - Emery,Edwin
TI  - Introduction to mass communications
SN  - 0060401729
AV  - P90 .A33 1976
PY  - 1979///
CY  - New York 
PB  - Harper & Row 
KW  - Medios de comunicación de masas
N1  - Includes index; Bibliography: p. [421]-457
ER  -