TY  - BOOK
AU  - Deans W M
AU  - Tomaschek R
TI  - Textbook of physics
U1  - 530.2 
PY  - 1949///
CY  - London
PB  - Blackie & Son
KW  - Physics-Textbook
N1  - V 4- Optics. Tr. from German ed
ER  -