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| 2019, Vol. 56(2): 40-43 DOI: | ||
| Discussion on Causes of and Preventive Measures against Tunnel Lining Voids and Inadequate Thickness | ||
| (Engineering Quality Supervision Station, China Railway Chengdu Group Co., Ltd., Chengdu 610031) | ||
| Received null Revised null | ||
| Supporting info | ||
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