Birth rates of the white population in the United States, 1800-1860, an economic study.
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| 格式: | 图书 |
| 语言: | 英语 |
| 出版: |
Baltimore
Johns Hopkins Press
c1962.
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| 丛编: | The Johns Hopkins University studies in historical and political science
series 79, no. 2 |
| 主题: |