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- [16] Government Ownership and Operation of Railroads ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1939, 201 : 137 - 145
- [18] Government ownership and operation of railroads JOURNAL OF LAND AND PUBLIC UTILITY ECONOMICS, 1929, 5 (03): : 338 - 339
- [20] Government Ownership and Regulation of Railroads ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1929, 146 : 278 - 279