TY  - BOOK
AU  - Grossman,Ruth H.
AU  - Michaelis,John U.
TI  - Working, playing, learning
T2  - Field social studies program
SN  - 9780514024518
U1  - 301.5 
PY  - 1972///
CY  - Palo Alto, California
PB  - Field Educational, 
KW  -  Family life education
KW  - Social sciences
N1  - Livre du maitre paru sous le titre : Teacher's edition
ER  -