Omer Yousif Elagab. <br/><br/>
The legality of non-forcible counter-measures in international law 

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 - New york  Oxford University Press  1988 
 - 255p. 
<br/><br/><label>ISBN: </label>019825590X 
<br/><br/><label>LC Class. No.: </label>KZ 6364  / ELA 1988