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| 2019, Vol. 26(4): 56-58 DOI: | ||
| China Natural Gas Industry Prosperity Index in the Second Quarter of 2019 | ||
| Shen Xilin, Emu Yezi, Li Yi | ||
| China Natural Gas Industry Prosperity Index Research Centre, Southwest Petroleum University | ||
| 收稿日期 null 修回日期 null | ||
| Supporting info | ||
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