Hart H. L. A. <br/><br/>
Concept of law 

 - Oxford  Oxford University Press       1961 
 - viii,263p.  cm. 
<br/><br/><label>Standard No.: </label>64393 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z, K1