TY  - BOOK
AU  - Fang, Irving E.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : six information revolutions 
SN  - 0240802543 (pbk. : acid-free paper)
SN  - 2
PY  - 1997///];copyright 1997.46
CY  - Boston
PB  - Focal Press
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - History
KW  - Communication
N1  - Includes bibliographical references (p. 244-254) and index; 5
ER  -