TY  - BOOK
AU  - R. A. Stevens
TI  - Out-of-school science activities for young people
T2  - Document (Unesco), ED. 68/D.46/A
U1  - 507 S846o 
PY  - 1969///
CY  - Paris
PB  -  Unesco
KW  -  Scientific recreations
KW  - Science
KW  - Study and teaching
ER  -