Hart, H. L. A. <br/><br/>
The concept of law 

 - Oxford  OUP  1961 
 - 263p. 
<br/><br/><label>ISBN: </label>9780194423175 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LAW IN GENERAL
<br/><br/><label>Universal Decimal Class. No.: </label>340.12  / H16