TY  - BOOK
AU  - Coference of the Association for Programmed Learning and Educational Technology (1973).
TI  - Selected papers. ed by John Leedham
T2  - Aspects of educational Technology,7
U1  - T:3p1,N73, L3 
PY  - 1973///
CY  - London
PB  - Pitam        
KW  - EDUCATION
ER  -