Gray J.C. <br/><br/>
Nature and sources of the law 
Gray J.C. 
 - New York  Columbia university press U.S.A.      1920 
 - 332p  cm. 
<br/><br/><label>Standard No.: </label>19,335 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z:91, F0