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

 - Oxford  Oxford university press U.S.A.       1975 
 - 262p  cm. 
<br/><br/><label>Standard No.: </label>10,085 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>Z1, L5