TY  - BOOK
AU  - Greenleaf, Allen R.
TI  - Photographic optics
PY  - 1950///
CY  - New York
PB  - The macmillan company
UR  - http://krc.clri.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=551
ER  -