III. Zum Briefwechsel GAUSS-OLBERS
Varia. Atlas des Erdmagnetismus Bd. 12, GDML_Books, (1929), p. 234 / Harvested from
Access to full text 
@article{PPN236060120+dmdlog143,
     title = {III. Zum Briefwechsel GAUSS-OLBERS},
     booktitle = {Varia. Atlas des Erdmagnetismus Bd. 12},
     series = {GDML\_Books},
     year = {1929},
     pages = {234},
     url = {http://dml.mathdoc.fr/item/PPN236060120+dmdlog143}
}

 (éd.). III. Zum Briefwechsel GAUSS-OLBERS, dans Varia. Atlas des Erdmagnetismus Bd. 12, GDML_Books,  (1929), p. 234. http://gdmltest.u-ga.fr/item/PPN236060120+dmdlog143/