TY  - BOOK
AU  - Clark,Ruth Colvin
AU  - 
TI  - E-Learning and the science of instruction : : proven guidelines for consumers and designers of multimedia learning
SN  - 0787960519
U1  - 658.124 23
PY  - 2003///
CY  - San Francisco : 
PB  - Pfeiffer , 
KW  - Business education - Computer - assisted instruction
ER  -