Van Melsen Andrew G <br/><br/>
Philosophy of nature 

 -  1954 
 - Duquesne studies philosophical series; 2 .
<br/><br/><label>Standard No.: </label>68,954 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R3:A, J4