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Novye materialy k biografii N.I. Lobachevskogo / sostavitel i avtor primechanii B.V. Fedorenko ; [otvetstvennyi redaktor B.L. Laptev].
Lobachevskii, N. I. (Nikolai Ivanovich), 1792-1856.
Mathematicians -- Soviet Union -- Biography.
Fedorenko, B. V.
Laptev, B. L.
Catalog