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Nikolai Patrushev Nikolai II dari Rusia Nikolai Gogol Nikolai Noskov Nikolai Marr Nikolai Rimsky-Korsakov Nikolai Ivanovich Lobachevsky Nikolai I dari Rusia Nikolai Fomenko Nikolai Gerasimovich KuznetsovRujukan
WikiPedia: Nikolai Ivanovich Lobachevsky http://www.lobachevsky.com http://www.hti.umich.edu/u/umhistmath/Lobachevsky.... http://www-groups.dcs.st-and.ac.uk/~history/Mathem... http://www-history.mcs.st-andrews.ac.uk/Biographie...