RT Journal Article
SR Electronic
T1 The British Standard for Spectacle Lenses
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 611
OP 612
DO 10.1136/bjo.40.10.611
VO 40
IS 10
A1 Nigel Cridland
YR 1956
UL http://bjo.bmj.com/content/40/10/611.abstract
AB