Siebenter Abschnitt.
Planimetrie Theil 2, GDML_Books, (1877), p. 81 / Harvested from
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@article{PPN592509036+DMDLOG_0010,
     title = {Siebenter Abschnitt.},
     booktitle = {Planimetrie Theil 2},
     series = {GDML\_Books},
     publisher = {Hirt},
     address = {Breslau},
     year = {1877},
     pages = {81},
     url = {http://dml.mathdoc.fr/item/PPN592509036+DMDLOG_0010}
}

 (éd.). Siebenter Abschnitt., dans Planimetrie Theil 2, GDML_Books,  (1877), p. 81. http://gdmltest.u-ga.fr/item/PPN592509036+DMDLOG_0010/