TY  - BOOK
ED  - grosset and dunlap
TI  - the science library
PY  - 1960///.
CY  - new york: 
PB  - grosset and dunlap, 
KW  - colour
KW  - Experiments
KW  - Light
KW  - R 500.03 μπλ
KW  - Science
N1  - 48pp., 21x28
ER  -