TY  - BOOK
AU  - FRY,EDWARD B
TI  - TEACHING MACHINES AND PROGRAMMED INSTRUCTION / 
U1  - 371.39442 
PY  - 1963///
CY  - [S.N] : 
PB  - MC GRAW - HILL ، 
KW  - PROGRAMMED INSTRUCTION
KW  - PROGRAMMED LEARNING
ER  -