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Mining equipment. Multifunctional safety systems of opencast coal minings. Remote monitoring systems of dangerous industrial objects

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Mining equipment. Devices for dancing of mine workings. General technical requirements and test methods

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Mining. Geotechnological risks. General principles for rating geotechnological risks in coal mining

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Services in the field of entertainment and recreation for children. Terms and definitions

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Optics and photonics. Lenses for optical electronic systems. Methods for measuring the diameter of the entrance pupil and determining the relative aperture

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Optics and photonics. Ophthalmic optics. Terms and definitions. Size system

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