TY  - BOOK
AU  - Tunnacliffe,A.H.
AU  - Janney,G.D.
TI  - Worked problems in ophthalmic lenses
SN  - 090009916X
PY  - 1997///
CY  - London
PB  - The Association of British Dispensing Opticians
KW  - Ophthalmic lenses
KW  - Optics
KW  - problems, exercise, etc
ER  -