TY  - BOOK
AU  - Schramm,Wilbur Lang
AU  - Roberts,Donald F.
TI  - The process and effects of mass communication
SN  - 0252001974
PY  - 1971///
CY  - Urbana
PB  - University of Illinois Press
KW  - Mass media
KW  - Congresses
N1  - Includes index and references : p. 967-979
ER  -