TY  - BOOK
AU  - Stahl,Gerry
TI  - Group cognition: computer support for building collaborative knowledge
SN  - 0262195399
U1  - 371.334 22
PY  - 2006///
CY  - Cambridge, Mass.
PB  - The MIT press
KW  - Computer-assisted instruction
KW  - Computer networks
N1  - Includes bibliographical references and index
ER  -