PT  - JOURNAL ARTICLE
AU  - E. Erskine Henderson
TI  - A NEW FORM OF BIFOCAL LENS
AID  - 10.1136/bjo.3.4.188
DP  - 1919 Apr 01
TA  - British Journal of Ophthalmology
PG  - 188--188
VI  - 3
IP  - 4
4099  - http://bjo.bmj.com/content/3/4/188.short
4100  - http://bjo.bmj.com/content/3/4/188.full
SO  - Br J Ophthalmol1919 Apr 01; 3