Title: N. I. Lobachevskiĭ i Nizhegorodskiĭ kraĭ na rubezhe XVIII-XIX stoletiĭ
Subjects: Homes and haunts, Mathematicians, Biography
Places: Russia (Federation), Nizhniĭ Novgorod, Russia
People: N. I. Lobachevskiĭ (1792-1856)