RT Journal Article
SR Electronic
T1 Astigmatic difference in refractive errors.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 422
OP 425
DO 10.1136/bjo.52.5.422
VO 52
IS 5
A1 Naylor, E. J.
YR 1968
UL http://bjo.bmj.com/content/52/5/422.abstract
AB