On the rate of mortality at early periods of life, the age at marriage, the number of children to a marriage, the length of a generation, and other statistics of families in the upper and professional classes /
Ansell, Charles
On the rate of mortality at early periods of life, the age at marriage, the number of children to a marriage, the length of a generation, and other statistics of families in the upper and professional classes / by Charles Ansell - London : National Life Assurance Society, 1874 - 89 p. : ill. ; 22 cm.
Mortality
Vital statistics
On the rate of mortality at early periods of life, the age at marriage, the number of children to a marriage, the length of a generation, and other statistics of families in the upper and professional classes / by Charles Ansell - London : National Life Assurance Society, 1874 - 89 p. : ill. ; 22 cm.
Mortality
Vital statistics