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15490-70

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: 15490-70
:
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.:Brown coals, hard coals, anthracite and thermoanthracite. Methods for determination of mechanical strength
:01.07.1970
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: 7714-55 .
: 21153.1-75 . 3
:1 --1977-01-01 (. --1976-12-02)
2 --1986-09-01 (. --1986-04-03)
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  • c=&f2=3&f1=II002001001&l='>1
  • c=&f2=3&f1=II002001001009&l='>19 . .


  •  15490-70
     15490-70
     15490-70
     15490-70
     15490-70
     15490-70
     15490-70


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