TY  - BOOK
T1  - Distance education :the foundations of effective practice /
DA  - 1991.
CY  - San Francisco :
AU  - Verduin, John R.
AU  - Clark, Thomas A.,
ET  - 1st ed.
CN  - LC5800
CN  - LC5800
PB  - Jossey-Bass,
PP  - San Francisco :
PY  - 1991.
ID  - 192272
KW  - Distance education.
SN  - 155542306X
TI  - Distance education :the foundations of effective practice /
ER  -