TY  - BOOK
AU  - Pocztar,Jerry
TI  - The theory and practice of programmed instruction: a guide for teachers 
T2  - Monographs on education, 7
U1  - 371.39442 23
PY  - 1972///
CY  - Paris
PB  - UNESCO
KW  - Programmed instruction
N1  - "ED.70/XVI.7/A."
ER  -