TY  - BOOK
AU  - Fang,Irving E.
TI  - A history of mass communication: six information revolutions 
SN  - 9781136046810
AV  - P90 F21
U1  - 302.2/09 20
PY  - 1997///]
CY  - Boston
PB  - Focal Press
KW  - Communication
KW  - History
N1  - Includes bibliographical references (pages 244-254) and index
ER  -