TY - Journal of Yangtze River Scientific Research Institute A1 - LI Ning, LIU Zhen-dong, GUO Xiu-jun, WANG Ying-ying T1 - Analysis and Evaluation of Hidden Diseases in Old Tunnel with GPR Images Y1 - 2018-03-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 97 EP - 103 VL - 35 IS - 3 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20171088 ER -