TY  - BOOK
AU  - Mann A P Ed.
AU  -  Brunstrom C K Ed.
ED  - International conference of the association for programmed learning and educational technology (1969 : University of London United Kingdon)
TI  - Association for Programmed Learning and Educational Technology :  Proceedings
U1  - Y:393p1,N69, L3 
PY  - 1973///
CY  - London
PB  - Isaac Pitman       
KW  - SOCIOLOGY
ER  -