共 50 条
- [42] The 70-year progress of non-ferrous metal exploration in China Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals, 2019, 29 (09): : 1817 - 1827
- [44] Annual agricultural N surplus in France over a 70-year period Nutrient Cycling in Agroecosystems, 2017, 107 : 63 - 78
- [45] Capital moves: RCA's 70-year quest for cheap labor MICHIGAN HISTORICAL REVIEW, 2000, 26 (02): : 166 - 166