Proceeding on national academy of sciences 

 -  1958 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>72081 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>Gm2:N31, J8