GUIDELINES + RECOMMENDATIONS + REGULATIONS (STANDARDS)
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BTSTANDARDS (GENERAL)
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UDC006.3*1
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Descriptor GERRICHTLINIEN + EMPFEHLUNGEN + VORSCHRIFTEN (NORMEN)
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Descriptor ENGGUIDELINES + RECOMMENDATIONS + REGULATIONS (STANDARDS)
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Descriptor FREDIRECTIVES + RECOMMANDATIONS + PRESCRIPTIONS (NORMES)
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Variant GEREMPFEHLUNGEN (NORMEN)
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Variant GERVORSCHRIFTEN (NORMEN)
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Variant ENGRECOMMENDATIONS (STANDARDS)
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Variant ENGREGULATIONS (STANDARDS)
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Variant FRERECOMMANDATIONS (NORMES)
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Variant FREPRESCRIPTIONS (NORMES)
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NTGUIDING FIGURES (STANDARDS)
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RTBEST PRACTICES + GOOD PRACTICES