Byers, Michael,  1966- <br/><br/>
Custom, power and the power of rules :  international relations and customary international law / 
by Michael Byers. 
 - Cambridge :  Cambridge University Press,  1999. 
 - xxii, 250p. 
<br/><br/><label>ISBN: </label>0521632897 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations.