ROLF, D E <br/><br/>
A reversible bifocal lens.  [electronic resource] 

 -  A.M.A. archives of ophthalmology  Apr 1951 
 - 468-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0096-6339 
<br/><br/><label>Standard No.: </label>10.1001/archopht.1951.01700010478013  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eyeglasses<br/>Humans<br/>Lenses