TY  - BOOK
AU  - W.T WELFORD
TI  - OPTICS
SN  - 0-19-442428-6
U1  - 535/WEL/OPT 
PY  - 1981///
CY  - LONDON
PB  - LOW PRICE PUBLICATION
KW  - LIGHT & INFRARED & ULTRAVIOLET PHENOMENA
KW  - PHYSICS
ER  -