Zong heng zhi dian hua jiao huan ji di dian zi dian lu

An edition of Zong heng zhi dian hua jiao huan ji di dian zi dian lu (1982)

Zong heng zhi dian hua jiao huan ji di dian zi dian lu

By Shi, Qingquan.

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Publish Date

1982

Publisher

Ren min you dian chu ban she,Xin hua shu dian Beijing fa xing suo fa xing

Language

chi

Pages

423

Description:

subjects: Electronic Telephone switching systems, Electronic circuits, Private branch exchanges, Telephone