@misc{JSFS_1909__50__502_0,
     title = {\'Emigration allemande},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {502--503},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {50},
     year = {1909},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1909__50__502_0/}
}