TY  - BOOK
AU  - Davison W Phillips, etc
TI  - Mass media :  Systems and effects   
SN  - 0275891402
U1  - Y:393.73.N7, L6 
PY  - 1976///
CY  - New York
PB  - Praeger         
KW  - Social Communication
N1  - Bibliography P 220-34; Appendix P 215-19
ER  -