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Migration and the Externalities of European Integration Edited by Sandra Lavenex and Emek M. Uçarer. Lanham, Boulder, New York, Oxford: Lexington Books, 2002. vii+232 US75, ISBN 0 7391 0378 4 hb; US24. 95, ISBN 0 7391 0629 5 pb
Christian Wolff (Mon,) studied this question.