Jia gan xian quan he fu zu kang zeng yin ji
By: Ni Dunxiang bian zhu
Edition: Di 1 ban
Publisher: Ren min you dian chu ban she; Xin hua shu dian Beijing fa xing suo fa xing
Published: 1982
Place of publication: Beijing
Language: chi
Number of pages: 167
Subjects: Telephone repeaters; Telephone lines