@book{PPN588385484, title = {Welcher die Arithmetik enth\"alt Erster Theil}, series = {GDML\_Books}, publisher = {Lagarde}, address = {Berlin}, year = {1799}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN588385484} }
Grüson, Johann Philipp. Welcher die Arithmetik enthält Erster Theil. GDML_Books (1799), http://gdmltest.u-ga.fr/item/PPN588385484/