Economic opportunity and white American fertility ratios 1800-1860 /
Forster, Colin.
Economic opportunity and white American fertility ratios 1800-1860 / by Colin Forster and G.S.L. Tucker ; with the assistance of Helen Bridge. - New Haven : Yale University Press, 1972. - ix, 121 p. :
0300014783
Fertility, Human--United States.
United States--Population.
United States--Economic conditions--To 1865.
304.6320973 / Ec
Economic opportunity and white American fertility ratios 1800-1860 / by Colin Forster and G.S.L. Tucker ; with the assistance of Helen Bridge. - New Haven : Yale University Press, 1972. - ix, 121 p. :
0300014783
Fertility, Human--United States.
United States--Population.
United States--Economic conditions--To 1865.
304.6320973 / Ec