TY  - BOOK
AU  - Berg,Gary A.
TI  - The knowledge medium: designing effective computer-based learning environments 
SN  - 1591401038
AV  - LB1028.5  .B47 2003
PY  - 2003///
CY  - Hershey
PB  - Idea Group
KW  - Computer-assisted instruction
ER  -