共 50 条
- [42] DEMOGRAPHIC-FACTORS AND ECONOMIC-INTEGRATION IN CENTRAL AMERICA [J]. JOURNAL OF INTERAMERICAN STUDIES AND WORLD AFFAIRS, 1963, 5 (04): : 533 - 543
- [43] DEMOGRAPHIC-FACTORS AND THE INCIDENCE OF DOWNS-SYNDROME IN IRELAND [J]. JOURNAL OF MENTAL DEFICIENCY RESEARCH, 1985, 29 (JUN): : 113 - 123