Trends in birth rates in the United States since 1870.
| मुख्य लेखक: | |
|---|---|
| स्वरूप: | पुस्तक |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
Baltimore
Johns Hopkins Press
1958.
|
| श्रृंखला: | The Johns Hopkins University studies in historical and political science
ser. 76, no. 1 |
| विषय: |