TY  - BOOK
AU  - Sproson, W. N.
AU  - Hacking, K.
AU  - Martin, J. C.
ED  - British Broadcasting Corporation
TI  - New equipment and methods for the evaluation of the performance of lenses for television (no.15)
U1  - 621.388 
PY  - 1957///
CY  - New York
PB  - British Broadcasting Corporation
KW  - Lens
ER  -