TY  - BOOK
AU  - Katz,Elihu
AU  - Lazarsfeld,Paul F.
AU  - Roper,Elmo
TI  - Personal influence: the part played by people in the flow of mass communications 
U1  - 342 
PY  - 1964///
CY  - New York
PB  - The Free Press Of Glencoe
KW  - Constitutional law
KW  - qrmak
N1  - Include index; A Report of the Bureau of Applied Social Research Columbia University; Bibliography: pages 381-393
UR  - https://fll.law.cu.edu.eg/fulltext/bks/B08-06245.pdf
ER  -