AHLENSTIEL, H <br/><br/>
Color vision aids for red-green blindness.  [electronic resource] 

 -  Medizinische Klinik  Nov 1946 
 - 503-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0025-8458 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color Vision Defects<br/>Humans