Verbesserungen.
Geometrie der Ebene Bd. 1, Th.1, GDML_Books, (1875), p. XVIII / Harvested from
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@article{PPN593808231+DMDLOG_0004,
     title = {Verbesserungen.},
     booktitle = {Geometrie der Ebene Bd. 1, Th.1},
     series = {GDML\_Books},
     publisher = {Teubner},
     address = {Leipzig},
     year = {1875},
     pages = {XVIII},
     url = {http://dml.mathdoc.fr/item/PPN593808231+DMDLOG_0004}
}

 (éd.). Verbesserungen., dans Geometrie der Ebene Bd. 1, Th.1, GDML_Books,  (1875), p. XVIII. http://gdmltest.u-ga.fr/item/PPN593808231+DMDLOG_0004/