Lobachevski, Nicholas books & textbook
The Theory of Parallels
Lobachevski, Nicholas Halsted, George Bruce
Rough Draft Printing /2015-06-03 Paperback / 52 Pages
isbn-10: 1603866833 / isbn-13: 9781603866835
Non-Euclidean Geometry: A Critical and Historical Study of its Development
Roberto Bonola Nicholas Lobachevski John Boylai H. S. Carslaw Federigo Enriques
Dover Publications /2010-11-18 Paperback / 448 Pages
isbn-10: 0486600270 / isbn-13: 9780486600277
Geometrical Researches on the Theory of Parallels (Classic Reprint)
Forgotten Books /2018-08-24 Paperback / 55 Pages
isbn-10: 1440060754 / isbn-13: 9781440060755