Macdougal, D T <br/><br/>
LIVING CELLS TWO AND A HALF CENTURIES OLD.  [electronic resource] 

 -  Science (New York, N.Y.)  Apr 1928 
 - 447-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.67.1739.447  doi