GAUSS an SCHUMACHER, 8.April 1842
Varia. Atlas des Erdmagnetismus Bd. 12, GDML_Books, (1929), p. 219 / Harvested from
@article{PPN236060120+dmdlog126,
     title = {GAUSS an SCHUMACHER, 8.April 1842},
     booktitle = {Varia. Atlas des Erdmagnetismus Bd. 12},
     series = {GDML\_Books},
     year = {1929},
     pages = {219},
     url = {http://dml.mathdoc.fr/item/PPN236060120+dmdlog126}
}
 (éd.). GAUSS an SCHUMACHER, 8.April 1842, dans Varia. Atlas des Erdmagnetismus Bd. 12, GDML_Books,  (1929), p. 219. http://gdmltest.u-ga.fr/item/PPN236060120+dmdlog126/