TY  - RPRT
A1  - Doblhammer, G.
A1  - Rodgers, J.L.
A1  - Rau, R.
T1  - Seasonality of birth in nineteenth and twentieth century Austria: Steps toward a unified theory of human reproductive seasonality
Y1  - 1999
PB  - Max Planck Institute for Demographic Research
CY  - Rostock
IS  - MPIDR Working Paper WP-1999-013

ER  -