TY  - BOOK
AU  - DeFleur, Melvin L.
AU  - Ball-Rokeach, Sandra J.
TI  - Theories of mass communication
SN  - 0582998700
U1  -  302.234 
PY  - 1988///
CY  - New York,USA
PB  - Longman
KW  - Mass media-Social aspects-History
ER  -