TY  - BOOK
AU  - De Fleur,Melvin Lawrence
TI  - Theories of mass communication
AV  - HM258HM258 .D35 1970.D35
U1  - 301.16 
PY  - 1970///
CY  - New York
PB  - David
KW  - Mass media
KW  - Social aspects
N1  - Includes bibliographical references
ER  -