TY  - BOOK
AU  - Sproson, W. N.
AU  - Hacking, K.
AU  - Martin, J. C.
ED  - British Broadcasting Corporation
TI  - New methods of lens testing and measurement (no.50)
U1  - 621.388 
PY  - 1963///
CY  - New York
PB  - British Broadcasting Corporation
KW  - Lens
N1  - Contents:Pt.1. A photo-electric lens testing bench -- pt.2. A method of observing and recording: the sources of flare in a lens
ER  -