Penn, R <br/><br/>
The mechanism of dark adaptation.  [electronic resource] 

 -  Survey of ophthalmology  Dec 1965 
 - 510-26 p.  digital 
<br/><br/> Publication Type: Journal Article; Review 
<br/><br/><label>ISSN: </label>0039-6257 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adaptation, Ocular<br/>Humans