TY  - BOOK
AU  - Johnson, David W
AU  - Johnson,  Roger T
TI  - Learning together and alone : cooperation, competition and individualization
SN  - 0135275814
U1  - 371.102 
PY  - 1987///
CY  - Englewood Cliffs, New Jersey
PB  - Longman
KW  - Group work in education
KW  - Interaction analysis in education
N1  - 002139; L 142
ER  -