first fifty: ebe's golden anniversary retrospective - part 10 of 29. in this 50th anniversary retrospective film, we hear thomas edison's words proclaim that educational films would one day replace the textbook as the basic tool of education. in the 1958 - 血管瓣 個影片檔及 b 捲影像00:32
work of the heart - part 26 of 30. rare visuals provide intimate close-ups of the structure and functions of the heart. operating rooms, cardiac laboratories, heart models, photomicroscopy, and artwork - the film combines many varying elements for maximum - 血管瓣 個影片檔及 b 捲影像00:34心臟
work of the heart - part 25 of 30. rare visuals provide intimate close-ups of the structure and functions of the heart. operating rooms, cardiac laboratories, heart models, photomicroscopy, and artwork - the film combines many varying elements for maximum - 血管瓣 個影片檔及 b 捲影像00:37心臟
asian malay mature man factory manager walking around in factory communicating with coworker with walkie talkie - 血管瓣 個影片檔及 b 捲影像00:16
asian malay mature man factory manager walking around in factory communicating with coworker with walkie talkie - 血管瓣 個影片檔及 b 捲影像00:22
asian malay mature man factory manager walking around in factory communicating with coworker with walkie talkie - 血管瓣 個影片檔及 b 捲影像00:23
asian malay mature man factory manager walking around in factory communicating with coworker with walkie talkie - 血管瓣 個影片檔及 b 捲影像00:20
squirrel makes its way to a food box to take away walnuts in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in... - 血管瓣 個影片檔及 b 捲影像00:12
squirrel takes away walnuts from a food box in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in berlin,... - 血管瓣 個影片檔及 b 捲影像01:06大自然
squirrel takes away walnuts from a food box in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in berlin,... - 血管瓣 個影片檔及 b 捲影像00:14
squirrel takes away walnuts from a food box in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in berlin,... - 血管瓣 個影片檔及 b 捲影像00:12
squirrel takes away walnuts from a food box in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in berlin,... - 血管瓣 個影片檔及 b 捲影像00:06
squirrel makes its way to a food box to take away walnuts in a garden in zehlendorf district during the coronavirus pandemic on february 28, 2021 in... - 血管瓣 個影片檔及 b 捲影像00:20
