© Courtesy of the Institute of Chinese Studies, Library, Heidelberg University.

Article
單座真空管收音機的構造法, Instructions on making single vacuum tube radios

農隱 Nong Yin (Author), 陳作絮 Chen Zuoxu (Author),

Keywords: radiocommunication, radio,

Image

趙得漁君之長女（家壁）三子（賢才）肖像 The portrait of the oldest daughter (Jiabi) and the third son (Xiancai) of Mr. Zhao

Keywords: portrait,

趙家壁 Zhao Jiabi (depicted on image), 趙得漁 Zhao Deyu (mentioned in caption), 趙賢才 Zhao Xiancai (depicted on image),