TY  - BOOK
AU  - Fry,Edward
TI  - Teaching machines and programmed instruction,: an introduction
AV  - LB1028.5 .F78
U1  - 371.3944 
PY  - 1963///]
CY  - New York
PB  - McGraw-Hill
KW  - Programmed instruction
KW  - Teaching machines
ER  -