TY  - BOOK
AU  - Cohen,Elizabeth G.
TI  - Designing groupwork: strategies for the heterogeneous classroom 
SN  - 0807733318
PY  - 1994///
CY  - New York
PB  - Teachers College Press
KW  - Group work in education
KW  - Interaction analysis in education
N1  - Includes bibliographical references (p. 189-195) and index
ER  -