RT Journal Article SR Electronic T1 Arteriography of the External Carotid. Anatomical, Radiological, and Clinical Study JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 358 OP 358 DO 10.1136/bjo.55.5.358 VO 55 IS 5 YR 1971 UL http://bjo.bmj.com/content/55/5/358.1.abstract AB