TY  - BOOK
AU  - Becker, Samuel L.
TI  - Discovering mass communication
SN  - 673183904
U1  - 001.51 
PY  - 1987///
CY  - Glenview, Ill
PB  - McGraw-Hill Book Co.
KW  - Mass media
N1  - 001713; S 059
ER  -