WALLS, G L <br/><br/>
How good is the H-R-R test for color blindness.  [electronic resource] 

 -  American journal of optometry and archives of American Academy of Optometry  Apr 1959 
 - 169-93 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9408 
<br/><br/><label>Standard No.: </label>10.1097/00006324-195904000-00001  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color Perception<br/>Color Vision<br/>Color Vision Defects<br/>Humans