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1Published 1987Syktyvkar : Komi filial AN SSSR, 1987.171 p., [4] folded leaves of plates : ill. ; 22 cm.Subjects: “...Natural gas Geology Russia, Northern Congresses....”
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2Published 1986Leningrad : Izd-vo "Nauka," Leningradskoe otd-nie, 1986.216 p. : ill. ; 22 cm.Subjects: “...Natural gas Geology Russia, Northern....”