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1by Tkachev, ︠I︡U. A.
Published 1975Leningrad : Nauka, Leningradskoe otd-nie, 1975.232 p. : ill. ; 21 cm. -
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4by Tkachev, ︠I︡U. A.
Published 1988Leningrad : "Nauka," Leningradskoe otd-nie, 1988.222 p. : ill. ; 24 cm. -
5Published 1986Syktyvkar : Akademi︠i︡a nauk SSSR, Komi filial, 1986.74 p. : ill. ; 22 cm.Other Authors: “...Tkachev, ︠I︡U. A....”
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6by ︠I︡Udovich, ︠I︡Akov Ėlʹevich
Published 2004Syktyvkar : Komi nauchnyĭ ︠t︡sentr Uralʹskogo otdeleni︠i︡a RAN, 2004.214 p. : ill. ; 22 cm.Other Authors: “...Tkachev, ︠I︡U. A....”
