TY  - BOOK
AU  - Ditchburn, R. W.
TI  - Light
U1  - 535 DIT 
PY  - 1964///
CY  - New York
PB  - : Interscience Publishers
KW  -  Light
KW  - ;Paraphotic phenomena
KW  - ;Physics
KW  - ;Ditchurn R.W
KW  - ;Interscience Publishers (Wiley)
ER  -