TY  - BOOK
AU  - Fang, Irving E
TI  - A history of mass communication : six information revolutions
SN  - 9780240802541
U1  - 302.209 FAN 
PY  - 1997///
CY  - Boston, MA
PB  - Focal Press
KW  - Communication - History
N1  - Includes bibliographical references (p. 244-254) and index
ER  -