En
Ru| Description |
Map of zonal propagation of coal of various qualities of the Kuznetsky pool: [Relinted.Zap.] / Yavorsky, V. I. - 1945. -.Electronic Source: Novosibirsk Gonble
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| Description |
Map of zonal propagation of coal of various qualities of the Kuznetsky pool: [Relinted.Zap.] / Yavorsky, V. I. - 1945. -.Electronic Source: Novosibirsk Gonble
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