sequence showing a man planning the build of a sluice in gold rush territory, canada. - 尺 個影片檔及 b 捲影像00:08
caucasian engineer or inspector checking and examining installing and adjusting window with measuring the water level at construction site, worker looking measuring the water level, industry concept. - 尺 個影片檔及 b 捲影像00:07
life in ancient rome - part 21 of 23. recreates the scenes and activities of rome during the reign of emperor trajan, and examines the characteristics and achievements of the roman empire. it also considers how roman ideas and culture influenced the devel - 尺 個影片檔及 b 捲影像00:38
1939 montage teacher and student inside classroom / lowndes county, alabama, united states - 尺 個影片檔及 b 捲影像00:12