Dian hua jiao huan yuan li
By: Wu Xiaoke zhu bian.
Contributors: Wu, Xiaoke.
Edition: Di 1 ban.
Publisher: Zhongguo tie dao chu ban she; Xin hua shu dian Beijing fa xing suo fa xing
Published: 1981
Place of publication: Beijing
Language: chi
Number of pages: 279
Subjects: Telephone switching systems, Electronic.; Railroads -- Telephone.
Notes: "Gao deng xue xiao shi yong jiao cai."