Hart, H L A <br/><br/>
The Concept of Law / 
H L A Hart 
 - 2nd  ed.  
 - New Delhi :  Oxford University Press ;  1961. 
 - 315 p. ; 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>0195664175       
<br/><br/><label>Dewey Class. No.: </label>G42  / H251