TY  - BOOK
AU  - Rowntree,Derek
TI  - Exploring open and distance learning 
T2  - Open and distance learning series
SN  - 9780749408138
U1  - 378.03 
PY  - 1992///
CY  - London
PB  - Kogan Page
KW  - Educazione a distanza
ER  -