• publisher: Leipzig, B. G. Teubner
  • creator: Lobachevskiĭ, N. I. (Nikolaĭ Ivanovich), 1792-1856 Engel, Friedrich, 1861-1941. ed. and tr
  • contributor: Engel, Friedrich, 1861-1941. ed. and tr.
  • Keyword: Geometry, Non-Euclidean
  • years: 1898-99.
  • pages: 2 v.
  • language: ger
  • class: QA685
  • notes: Paged continuously.
  • download: pdf file