TY  - BOOK
ED  - UNESCO
TI  - Group techniques in education
SN  - 9231014110
U1  - 371.25 
PY  - 1977///
CY  - Paris, [New York]
PB  - Unesco, distributed by Unipub
KW  - Group work in education
N1  - Bibliography: p. 51
ER  -