北京时间：长短波授时系统 = Beijing time：BPL and BPM national time service systems

Main Authors: 李孝辉 (1974-) (李孝辉，窦忠，赵晓辉主编); 窦忠 (1968-); 赵晓辉
Published: 浙江教育出版社
Publication Dates: 2018
Call Number: P127.1/4449