TY  - BOOK
AU  - Fang,Irving E.
TI  - A history mass communication: six information revolutions 
SN  - 0240802543 (pbk. : acidfree paper)
AV  - P90 .F26 1997
PY  - 1997///
CY  - Boston
PB  - Focal Press/Elsevier
KW  - Communication
KW  - History
N1  - Includes bibliographical references (p. 244-254) and index
ER  -