Birth rates of the white population in the United States, 1800-1860, an economic study.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Baltimore
Johns Hopkins Press
c1962.
|
| Cyfres: | The Johns Hopkins University studies in historical and political science
series 79, no. 2 |
| Pynciau: |