Book of popular science 

 -  1956 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>59862 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>A, J61.1         CS