TY  - BOOK
AU  - Fang, Irving
TI  - A history of mass communication: six information revolutions
SN  - 0240802543
U1  - Res 302.209 F214 1997 
PY  - 1997///
CY  - USA
PB  - Focal Press
KW  - Communication - History.
N1  - Includes bibliographical references and index
ER  -