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| 2014, Vol. 51(6): 7-11 DOI: | ||
| Formation Mode of Shallow Natural Gas in the Laoshishan Tunnel on the Kunming-Nanning Passenger Dedicated Line | ||
| (1 China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031; 2 School of Resources and Environment, Southwest Petroleum University, Chengdu 610500) | ||
| Received null Revised null | ||
| Supporting info | ||
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