000 00696pam a2200193a 44500
040 _aP K Kelkar Library, IIT Kanpur
082 _a621.388
_bB777m
100 _aSproson, W. N.
245 1 _aNew methods of lens testing and measurement (no.50)
_cW. N. Sproson
260 _aNew York
_bBritish Broadcasting Corporation
_c1963
300 _a23p
440 _aBbc Engineering Monograph
_vNo.50
505 _aContents:Pt.1. A photo-electric lens testing bench -- pt.2. A method of observing and recording: the sources of flare in a lens
650 _aLens
700 _aHacking, K.
700 _aMartin, J. C.
710 _aBritish Broadcasting Corporation
997 _a39069 no.50 s C
999 _c451315
_d451315