TY  - JOUR
A1  - Ní Bhrolcháin, M.
T1  - Period parity progression ratios and birth intervals in England and Wales, 1941–1971: A synthetic life table analysis
Y1  - 1987
DO  - 10.1080/0032472031000142556
JF  - Population Studies
VL  - 41
IS  - 1

ER  -