共 9 条
[3]
Eveleth PB., 1976, WORLDWIDE VARIATION
[5]
JANES MD, 1974, TROP GEOGR MED, V26, P389
[6]
JANES MD, 1970, B INT EPIDEMIOLOGICA, V20, P127
[8]
MALCOLM LA, 1971, GROWTH DEVELOPMENT 1