TY  - BOOK
AU  - Johnson,David W.
AU  - Johnson,Roger T.
TI  - Learning together and alone: cooperative, competitive, and individualistic learning 
SN  - 0205155758
PY  - 1991///
CY  - Boston
PB  - Allyn and Bacon
KW  - Group work in education
KW  - Individualized instruction
KW  - Interaction analysis in education
KW  - Lesson planning
N1  - references p. 223-227
ER  -