TY  - BOOK
AU  - Espich,James E.
AU  - Williams,Bill
TI  - Developing programmed instructional materials : : a handbook for pr ogram writers 
U1  - 370.777 
PY  - 1967///
CY  - Palo Alto, Calif. : 
PB  - Fearon Publishers, 
KW  - Programmed instruction
KW  - Authorship
ER  -