DURHAM, O C <br/><br/>
Pollen prevalence and pollen-free areas.  [electronic resource] 

 -  Journal of the American Medical Association  Mar 1952 
 - 716-20 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9955 
<br/><br/><label>Standard No.: </label>10.1001/jama.1952.02930090026007  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Allergens<br/>Pollen<br/>Prevalence