Spark, Gareth <br/><br/>
Vitiation of contracts :  international contractual principles and English law / 
Gareth Spark 
 - Cambridge :  Cambridge University Press,  2013 
 - xviii, 335 p. :  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781107031784 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Impossibility of performance<br/>Nullity<br/>Discharge of contracts<br/>Breach of contract