312 IV xing shi er lu zai bo dian hua she bei
Subtitle: ZM 312 IV xing zhong duan ji ji ZR 312 IV xing zeng yin ji
By: You dian wu yi wu chang bian.
Contributors: You dian 515 chang (China)
Edition: Di 1 ban.
Publisher: Ren min you dian chu ban she; Xin hua shu dian Beijing fa xing suo fa xing
Published: 1977
Place of publication: Beijing
Language: chi
Number of pages: 184
Subjects: Telephone, Carrier current -- Equipment and supplies.