Ebene Trigonometrie.
Ebene und sphärische Trigonometrie Theil 3, GDML_Books, (1874), p. 15 / Harvested from
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@article{PPN592509354+DMDLOG_0005,
     title = {Ebene Trigonometrie.},
     booktitle = {Ebene und sph\"arische Trigonometrie Theil 3},
     series = {GDML\_Books},
     publisher = {Hirt},
     address = {Breslau},
     year = {1874},
     pages = {15},
     url = {http://dml.mathdoc.fr/item/PPN592509354+DMDLOG_0005}
}

 (éd.). Ebene Trigonometrie., dans Ebene und sphärische Trigonometrie Theil 3, GDML_Books,  (1874), p. 15. http://gdmltest.u-ga.fr/item/PPN592509354+DMDLOG_0005/