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Translated from Sibirskii Matematicheskii Zhurnal, Vol. 23, No. 3, pp. 155–160, May–June, 1982.
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Mednyh, A.D. Hurwitz problem on the number of nonequivalent coverings of a compact Riemann surface. Sib Math J 23, 415–420 (1982). https://doi.org/10.1007/BF00973499
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DOI: https://doi.org/10.1007/BF00973499