GOST 18489-73

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State system for ensuring the uniformity of measurements. Low power SHF wattmeters and their primary measuring transformers of frequency range 0,03-78.33 GHz. Verification means and methods

Occupational safety standards. Respiratory system protective devices. Recommendations for selection, use and maintenance

Slotted raised countersunk head screws. Product grade A

Synthetic and mixed-fibre fabrics for tire industry. Specifications

Data quality. Part 1. Overview