TY  - BOOK
AU  - Cyrs, Thomas E., editor
TI  - Teaching and learning at a distance: what it takes to effectively design, deliver, and evaluate programs 
SN  - 0-7879-9884-2
U1  - 374.4 
PY  - 1997///
CY  - San Francisco, Calif.
PB  - Jossey - Bass Publishers
KW  - EDUCACION A DISTANCIA
ER  -