Book (Practical) Industry Telecommunications Textbook Chief Telecommunications Engineer [Transmission and Switching Equipment and Equipment Management / Laws and Regulations]
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: 単行本(実用) 産業 電気通信教科書 電気通信主任技術者【伝送交換設備及び設備管理・法規編】