International encyclopedia of unified science  

 - Chicago:   University of Chicago Press,   1955 
 - 342p.- 760p.  
<br/><br/> Vol. 1, Nos. 6-10; 342p.- 760p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics  
<br/><br/><label>Universal Decimal Class. No.: </label>R 501  / J5.1