Oppenheim's  <br/><br/>
International Law: Vol.1;Itroduction and  Part-1 

 - 9th 
 - UK:  Oxford University Press,  2015 
 - lxxxvi,554,i-33P. 
<br/><br/> 1. International Law - Theory and principles.<br/> 
<br/><br/><label>ISBN: </label>9780199463619 
<br/><br/><label>Dewey Class. No.: </label>341 OPP