Scientific American resource library 
by  
 -  1969 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>73753 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>Gx, K9.2;1   CS