共 50 条
- [45] The reserves of iron ore for the United States TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS, 1914, 50 : 197 - 203
- [46] Prevalence of iron deficiency in the United States JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1997, 277 (12): : 973 - 976
- [48] The iron and steel industry in the United States AMERICAN ECONOMIC REVIEW, 1932, 22 (02): : 304 - 305