TY  - BOOK
AU  - Emery,Edwin
AU  - Ault,Phillip H.
AU  - Agee,Warren K.
TI  - Introduction to mass communications
SN  - 0396067530
PY  - 1973///
CY  - New York
PB  - Dodd & Mead
KW  - Mass media
N1  - References : p. 418-452
ER  -