@article{JSFS_1880__21__56_0,
     author = {Loua, Toussaint},
     title = {Le service des \'echanges internationaux},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {56--56},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {21},
     year = {1880},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1880__21__56_0/}
}