共 18 条
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- [13] Vellins S, 1982, NEW COMMUNITY, V10, P206
- [14] 1988, MED SCH ADMISSION
- [15] 1987, ETHNIC BACKGROUND EX
- [16] 1986, POPULATION TRENDS, V46, P18
- [17] 1983, STATISTICAL PACKAGE
- [18] 1987, UCCA24 U CENTR COUNC