@book{Loeffelholz+Köpp+2015,
url = {https://doi.org/10.3790/9783428498017},
title = {Ökonomische Auswirkungen der Zuwanderungen nach Deutschland},
title = {},
author = {Hans Dietrich von LoeffelholzGünter Köpp},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428498017},
isbn = {9783428498017},
year = {1998},
lastchecked = {2015}
}