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Spanish Association for Standardization (UNE), ?? ????? ??

Japanese Industrial Standards Committee (JISC), ?? ????? ??

Standards Norway, ?? ????? ??

British Standards Institution (BSI), ?? ????? ??

Society of Automotive Engineers (SAE), ?? ????? ??

Korean Agency for Technology and Standards (KATS), ?? ????? ??

RO-ASRO, ?? ????? ??

European Committee for Standardization (CEN), ?? ????? ??

Association Francaise de Normalisation, ?? ????? ??

SE-SIS, ?? ????? ??

IN-BIS, ?? ????? ??

PK-PSQCA, ?? ????? ??

Professional Standard - Forestry, ?? ????? ??

International Organization for Standardization (ISO), ?? ????? ??

Bureau of Indian Standards, ?? ????? ??

German Institute for Standardization, ?? ????? ??

NL-NEN, ?? ????? ??

PT-IPQ, ?? ????? ??

AASHTO - American Association of State Highway and Transportation Officials, ?? ????? ??

  • T121-1994 ????? ?? ??? ??(?? ??), ?? ? ?? ??(??)? ?? ?? ??(?18?, ASTM C138-92)
  • T121-1997 ????(????)? ????? ?? ? ?? ??(??)? ?? ?? ?? ??(?20?; ASTM C138-92)

Gosstandart of Russia, ?? ????? ??

American Society for Testing and Materials (ASTM), ?? ????? ??


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