King-Smith, P E <br/><br/>
The optical density of erythrolabe determined by retinal densitometry.  [electronic resource] 

 -  The Journal of physiology  Oct 1971 
 - 100P-101P p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-3751 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color Vision Defects<br/>Densitometry<br/>Humans<br/>Methods<br/>Photoreceptor Cells--physiology<br/>Retinal Pigments