TY  - BOOK
AU  - Rowntree Derek
TI  - Preparing materials for open, distance and flxible learning
T2  - (Open and distance learning series)
U1  - T4:4,8.3, N4 
PY  - 1994///
CY  - Open
PB  - University Kogan page      
KW  - EDUCATION
ER  -