Genrich Altshuller Teaching TRIZ 3 of 6
4:25
Added: 4 years ago
From: smithhn
Views: 7,052
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  • Your video is a favorite on Korea, South

    tiamarquez0 1 month ago

  • Спасибо

    RA4FOC 2 years ago

  • Thanks for your gift.

    passionatethanh 4 years ago

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