共 13 条
[1]
BELSEY MA, 1976, B WORLD HEALTH ORGAN, V54, P319
[2]
BONGAARTS J, 1983, FERTILITY BIOL BEHAV, P40
[3]
DANELL C, 1981, TRADITION TRANSITION
[5]
HOGBERG U, 1988, SOC HLTH POPULATION, P143
[6]
HOGBERG U, 1985, THESIS UMEA U
[7]
JAMES W, 1985, J BIOSOC SCI, V13, P419
[8]
Jansen R P, 1984, IPPF Med Bull, V18, P4
[10]
NORDENFELT L, 1984, GRUNDEN SVENSK DODSO