Hempel Carl G <br/><br/>
Philosophy of natural science. 

 - Prentice-Hall  London         1969 
 - ix,116p.  cm. 
 - Foundation of philosophy series. .
<br/><br/><label>Standard No.: </label>130827 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R:(A), K9