TY  - BOOK
AU  - DICK,WALTER
AU  - Cary,Lou
TI  - The System Desion OF Instruction / 
SN  - 0673180700
U1  - 371.3 
PY  - 1937///.
CY  - newyork : 
PB  - SCOTT, 
KW  - TEACHING METHODS.
KW  - INSTRUCTION SYSTEMS
ER  -