Leuffen, Dirk. <br/><br/>
Differentiated integration :  explaining variation in the European Union / 
Dirk Leuffen, Berthold Rittberger and Frank Schimmelfennig. 
 - Houndsmill, Basingstoke, Hampshire :  Palgrave Macmillan,  2013. 
 - xvi, 287 p. :  ill. ;  24 cm. 
<br/><br/> "This innovative new text provides a state-of-the-art introduction to the study of European integration, focusing centrally on explaining the differentiated character of the European Union in terms of policy areas, institutional development and geographical span."--Publisher's website. 
<br/><br/><label>ISBN: </label>9780230246430 (hbk.) 9780230246447 (pbk.) 
<br/><br/><label>LCCN: </label>2012532821 
<br/><br/><label>LC Class. No.: </label>JN30  / .L48 2013 
<br/><br/><label>Dewey Class. No.: </label>341.2422