TY  - BOOK
AU  - Distefano, Anna  .
TI  - Encyclopedia of distributed learning / 
SN  - 0-7619-2451-5
U1  - Tk 
PY  - 2004///
CY  - New Delhi : 
PB  - Sage Publications India Pvt. Ltd , 
KW  - Distance education-Encyclopedias
ER  -