Invention and Practice of New High-speed Bilateral Observation Digital Level & Staff
LIU Yanchun, WANG Haiting, ZHAO Junsheng, MENG Qiang, LIU Yao, WU Xianghua
测绘通报 . 2017, (12): 131 -137 .  DOI: 10.13474/j.cnki.11-2246.2017.0395