Clifford's Parallelen.
Gehalten während des Sommersemesters 1890 Vorlesung 2, GDML_Books, (1890), p. 253 / Harvested from
Access to full text 
@article{PPN516973169+dmdlog44,
     title = {Clifford's Parallelen.},
     booktitle = {Gehalten w\"ahrend des Sommersemesters 1890 Vorlesung 2},
     series = {GDML\_Books},
     year = {1890},
     pages = {253},
     url = {http://dml.mathdoc.fr/item/PPN516973169+dmdlog44}
}

 (éd.). Clifford's Parallelen., dans Gehalten während des Sommersemesters 1890 Vorlesung 2, GDML_Books,  (1890), p. 253. http://gdmltest.u-ga.fr/item/PPN516973169+dmdlog44/