TY  - BOOK
AU  - Siebert, Fredrick Seaton
AU  - Peterson, Theodore Bernard
AU  - Schram, Wilbur Lang
TI  - Four theories of the press
SN  - 0-8369-8173-1
AV  - PN 4731 S49
PY  - 1956///
CY  - New York
PB  - Books for Libraries
KW  - Prensa
ER  -