Metric screw threads in the range 1-180 mm diameters for the parts in plastics. Profile, basic dimensions and tolerances
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Occupational safety standards system. Air in the zone of operation. Method of measuring unhealthy matters concentration using indicator tubes
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Occupational safety standards system. Vibration. Methods of control at working places and in accommodations of sea and river ships
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Occupation safety standards system. Devices for electric welding and plasma treatment. Safety requirements
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