TY  - BOOK
TI  - A guide to programed instructional materials: a vailable to educators by september 1962 
AV  - LB1050.37 G8.6
PY  - 1962///
CY  - Washington
PB  - The Center for Programmed Instruction
KW  - Educación
KW  - Estados Unidos
KW  - Enseñanza programada
N1  - "OEA 34015"
ER  -