TY  - BOOK
AU  - Bragg,William Henry
TI  - The universe of light,
U1  - 535 
PY  - 1933///
CY  - London
PB  - G. Bell & Sons ltd.
KW  - Color
KW  - Light
N1  - Each of the two colored plates accompanied by guard sheet with descriptive letterpress; 0; 0; 0; 535_000000000000000_BRA
ER  -