Instruction on the Observation of the Displacement of Rocks, the Earth's Surface and Undermined Structures at Coal and Shale Deposits – Russian translation

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Instruction on the Observation of the Displacement of Rocks, the Earth's Surface and Undermined Structures at Coal and Shale Deposits

Инструкция по наблюдению за сдвижением горных пород, земной поверхности и за подрабатываемыми сооружениями на угольных и сланцевых месторождениях (E&Y ABelonogov)

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