TY  - BOOK
AU  - Thomas, Charles Aubrey,
AU  - Davies, I. K.
TI  - Programmed learning in perspective: A guide to program writing 
AV  - LB1028.5 T45
PY  - 1965///c1963
CY  - Chicago
PB  - Methods
KW  - Enseñanza programada
ER  -