TY  - BOOK
AU  - Pocztar,Jerry
TI  - The theory and practice of programmed instruction: a guide for teachers 
T2  - Unesco. Monographs on education
PY  - 1972///
CY  - Paris
PB  - Unesco
KW  - Programmed instruction
N1  - 'ED.70/XVI.7/A.'; Bibliography : p. 177-179
ER  -