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Microbiology of food and animal feeding stuffs. Polymerase chain reaction (PCR) method for the detection of food-borne pathogens. General requirements and definitions
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Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Method for determination of grain-size distribution
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Fabrics waterproof and jacket of synthetic threads. General specifications
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Tapping screw and washer assemblies with plain washers
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