@article{PPN236060120+dmdlog56, title = {17. Kindersterblichkeit}, booktitle = {Varia. Atlas des Erdmagnetismus Bd. 12}, series = {GDML\_Books}, year = {1929}, pages = {71}, url = {http://dml.mathdoc.fr/item/PPN236060120+dmdlog56} }
(éd.). 17. Kindersterblichkeit, dans Varia. Atlas des Erdmagnetismus Bd. 12, GDML_Books, (1929), p. 71. http://gdmltest.u-ga.fr/item/PPN236060120+dmdlog56/