TY  - BOOK
AU  - Fry, Edward B. 
TI  - Teaching machines and programmed instructions : : An introduction 
U1  - 371.3944  
PY  - 1963///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - Teaching machines
KW  - Educative technology
KW  - Programmed instruction
N1  - Includes index
ER  -