Vorwort.
Grundvorstellungen der Geometrie Theil 1, GDML_Books, (1869), p. uncounted / Harvested from
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@article{PPN593925270+DMDLOG_0002,
     title = {Vorwort.},
     booktitle = {Grundvorstellungen der Geometrie Theil 1},
     series = {GDML\_Books},
     publisher = {Vieweg},
     year = {1869},
     pages = {uncounted},
     url = {http://dml.mathdoc.fr/item/PPN593925270+DMDLOG_0002}
}

 (éd.). Vorwort., dans Grundvorstellungen der Geometrie Theil 1, GDML_Books,  (1869), p. uncounted. http://gdmltest.u-ga.fr/item/PPN593925270+DMDLOG_0002/