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1par Lobachevsky Nikolai Ivanovich
Monom 1980Livre -
2par Lobachevsky Nikolai Ivanovich
European Mathematical Society cop. 2010Livre -
3Livre
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4par Bonola Roberto, Bolyai János, Lobachevsky Nikolai Ivanovich, Carslaw Horatio Scott, Halsted George
Dover 1955Livre