TY  - BOOK
AU  - Davison,W.Phillips
AU  - Boylan,James R.
AU  - Yu,Frederick T.C.
TI  - Mass media: systems and effects 
SN  - 0275336808 :
U1  - 301.243 
PY  - 1976///
CY  - New York
PB  - Praeger
KW  - Mass media
KW  - Social aspects
KW  - Communication
N1  - Includes bibliographical references and index
ER  -