TY  - JOUR
A1  - Preston, S.H.
A1  - Himes, C.L.
A1  - Eggers, M.
T1  - Demographic conditions responsible for population aging
Y1  - 1989
DO  - 10.2307/2061266
JF  - Demography
VL  - 26
IS  - 4
SP  - 691
EP  - -704

ER  -