@article{JSFS_1951__92__70_0,
     author = {Blondel, F.},
     title = {Sur la composition des gisements min\'eraux},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {70--74},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {92},
     year = {1951},
     language = {fr},
     url = {http://archive.numdam.org/item/JSFS_1951__92__70_0/}
}