Hegner, R W <br/><br/>
Quantitative Relations Between Chromatin and Cytoplasm in the Genus Arcella, with their Relations to External Characters.  [electronic resource] 

 -  Proceedings of the National Academy of Sciences of the United States of America  Jan 1919 
 - 19-22 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0027-8424 
<br/><br/><label>Standard No.: </label>10.1073/pnas.5.1.19  doi