PT  - JOURNAL ARTICLE
ED  - ,
TI  - WILLIAM LANG
AID  - 10.1136/bjo.21.10.568
DP  - 1937 Oct 01
TA  - British Journal of Ophthalmology
PG  - 568--572
VI  - 21
IP  - 10
4099  - http://bjo.bmj.com/content/21/10/568.short
4100  - http://bjo.bmj.com/content/21/10/568.full
SO  - Br J Ophthalmol1937 Oct 01; 21