hands grow up - part 2 of 10. much of children's play is an imitation of - and a preparation for - adult activities. hands grow up shows children at play (e.g., children playing with mud) and then a corresponding adult activity (in this case, a potter sha - rivet work tool 個影片檔及 b 捲影像00:33
april 8, 1930 montage automatic riveting & final fabrication of empire state building beam / homestead, pennsylvania, united states - rivet work tool 個影片檔及 b 捲影像00:13
production soldiers at home on 24-hour day and night shifts set new pace in shipyards building merchant / map of un convoy routes / convoy of ships... - rivet work tool 個影片檔及 b 捲影像01:12