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Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Heavy minerals determination method
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Levels with micrometrical feed of ampule. Specifications
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Subland twist drills for holes prior to tapping screw threads. Basic dimensions
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Walking aids manipulated by both arms. Requirements and test methods. Part 3. Walking tables
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Occupational safety standards system. Personal protective means of hear body. Test methods. Part 3. Supplementary acoustic test methods
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