TY  - BOOK
AU  - JOHNSON, David W. [et .al]
AU  - David W. Johnson
AU  - Roger T . Johnson
AU  - Edythe Johnson Holubec
TI  - Revised Circles of Learning: Cooperation in the Classroom
SN  - 0939603012
U1  - 153.15 
PY  - 1986///
CY  - Edina
PB  - Interaction Book Company
KW  - Learning
N1  - Includes references
ER  -