TY  - BOOK
AU  - Ritchie,L. David
TI  - INFORMATION
SN  - 0803939051
U1  - 621.38 
PY  - 1991///
CY  - 
PB  - Sage Publications, Newbury Park
KW  - Communication
KW  - Information Science
N1  - Includes Index
ER  -