van Dam, E., & van der Erf, R. (1998). Asylum-seekers and refugees, a statistical report: Volume 3: Central European Countries.
Lua i Stíl Chicago (17ú heag.)van Dam, Elsbeth, agus Rob van der Erf. Asylum-seekers and Refugees, a Statistical Report: Volume 3: Central European Countries. Luxembourg, 1998.
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