共 50 条
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- [45] Government Ownership of Patents JOURNAL OF THE PATENT OFFICE SOCIETY, 1936, 18 (10): : 697 - 708
- [46] Government Ownership of Patents JOURNAL OF THE PATENT OFFICE SOCIETY, 1943, 25 (10): : 729 - 758
- [47] Government Ownership of Railways ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1911, 37 (03): : 184 - 185
- [48] THE RAILROADS UNDER GOVERNMENT OPERATION. II. FROM JANUARY 1, 1919, TO MARCH 1, 1920 QUARTERLY JOURNAL OF ECONOMICS, 1921, 36 (01): : 30 - 71
- [49] American Railroads: Government Control and Reconstruction Policies AMERICAN ECONOMIC REVIEW, 1923, 13 (03): : 487 - 489