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              Hammar T. (1990). Democracy and the Nation State: Aliens, Denizens, and Citizens in a World of Interna- tional Migration. Aldershot: Avebury.
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              Hammar, T. (1990) Democracy and the Nation-State: Aliens, Denizens, and Citizens in a World of International Migration. Aldershot, UK: Gower.
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              Hammar, T. (1990), Democracy and the Nation State: Aliens, Denizens and Citizens in a World of International Migration. Aldershot: Avebury.
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              Hammar, T. (1990). Democracy and the Nation State. Aliens, Denizens and Citizens in a World of International Migration. Aldershot, Brookfield, Singapore, Sidney: Ashgate.
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              Hammar, T. (1990). Democracy and the nation state: Aliens, denizens and citizens in a world of international migration. Brookfield, VT: Avebury.
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              Hammar, T. (1990). Democracy and the nation state: Aliens, denizens, and citizens in a world of international migration. Avebury; Gower Pub. Co.
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              Hammar, Tomas (1990), Democracy and the Nation-State. Aliens, Denizens, and Citizens in a World of International Migration. Aldershot: Avebury.
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              Hammar, Tomas (1990): Democracy and the Nation State: Aliens, Denizens, and Citizens in a World of International Migration, Avebury: Gower Pub Co.
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              Hammar, Tomas (1990): Democracy and the nation state. Aliens, denizens and citizens in a world of international migration. Aldershot: Ashgate.
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              Hammar, Tomas, (1990) Democracy and the Nation State. Aliens, Denizens and Citizens in a World of International Migration. Avebury, Aldershot.
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              Hammar, Tomas, 1990. Democracy and the nation state : aliens, denizens and citizens in a world of interna-tional migration, Brookfield, Vt.: Averbury.
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              Hammar, Tomas, 1990: Democracy and the Nation-State. Aliens, Denizens and Citizens in a World of International Migration. Aldershot: Gower.
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              Hammar, Tomas. 1990. Democracy and the Nation State. Aliens, Denizens and Citizens in a World of International Migration. Aldershot: Avbury. ---. 1985. "Immigration Regulation and Alien Control". In: European Immigration Policy: A Comparative Study, edited by Tomas Hammar, 249- 62. Cambridge: Cambridge University Press.
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              Hammar, Tomas. 1990. Democracy and the Nation State: Aliens, Denizens and Citizens in a World of International Migration. Aldershot: Avebury.
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