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- [22] Labor in the United States ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1939, 203 : 243 - 244
- [27] FARM TENANCY IN THE UNITED STATES ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1912, 40 : 29 - 39
- [28] FARM TENURE IN THE UNITED STATES ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1909, 33 (03): : 647 - 657