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Migration und ethnische Beziehungen : Bibliographie ...
The Immigration History Research Center : a guide to collections
Moody, Suzanna, (1991)
The encyclopedia of migration and minorities in Europe : from the 17th century to the present
Bade, Klaus J., (2011)
Flüchtlinge in Westeuropa : eine Bibliographie
Steindl, Regina, (1992)