© 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

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