RT Journal Article SR Electronic T1 HEREDITARY MYOPIA IN IDENTICAL TWINS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 491 OP 494 DO 10.1136/bjo.33.8.491 VO 33 IS 8 A1 Burns, R. A. YR 1949 UL http://bjo.bmj.com/content/33/8/491.abstract AB