Trends in birth rates in the United States since 1870
By: Bernard Okun.
Series: Johns Hopkins University studies in historical and political science -- v. 76, no. 1.; Johns Hopkins University studies in historical and political science -- ser. 76, no. 1.
Publisher: Johns Hopkins Press
Published: 1958
Place of publication: Baltimore
Language: eng
Number of pages: 203
Subjects: United States -- Population.
Notes: Bibliographical footnotes and index.