TY  - BOOK
AU  - De Fleur,Melvin L.
AU  - Sandra Ball-Rokeach
TI  - Theories of mass communication
SN  - 0-582-28277-2
AV  - HM258.D3 
PY  - 1982///
CY  - New York
PB  -  : Longmans
KW  - Mass media,
KW  - Social aspects,
KW  - History
KW  -  Canada
N1  - Includes index
ER  -