TY  - CHAP
A1  - Hobbs, F.
T1  - Age and sex composition
Y1  - 2004
DO  - 10.1016/b978-012641955-9/50041-2
A3  - Siegel, J.S.
A3  - Swanson, D.A.
T2  - The methods and materials of demography
CY  - London
PB  - Elsevier Academic Press

ER  -