Excavations in Construction/Trenching

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  • Опубликовано: 30 окт 2011

Комментарии • 2

  • @theartofplumbing
    @theartofplumbing 10 лет назад +33

    Thank you very much for the videos

  • @beenforgiven1
    @beenforgiven1 9 лет назад +33

    are there question worksheets that can be used with these videos? if so, where can I obtain them?