Hart, H. L. A <br/><br/>
The concept of law 
/ H.L.A. Hart 
 - 2nd ed. 
 - New york:  Oxfrod Univeristy press,  c1961. 
 - x,315 p.  24 cm.  
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780195664171  TZS 14328.344 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law <br/>Law and morals<br/>Justice and morality
<br/><br/><label>Dewey Class. No.: </label>340.1 HAR