共 13 条
[1]
BUTLER NR, 1969, CITED INDIRECTLY
[4]
HENDRICKS CH, 1966, OBSTET GYNECOL, V27, P47
[5]
HOWARD RG, 1970, CHILD DEV, V41, P519
[6]
ANALYSIS OF MULTIPLE BIRTH-RATES IN JAPAN .1. SECULAR TREND, MATERNAL AGE EFFECT, AND GEOGRAPHICAL VARIATION IN TWINNING RATES
[J].
ACTA GENETICAE MEDICAE ET GEMELLOLOGIAE,
1979, 28 (02)
:107-124
[7]
IMAIZUMI Y, ACTA GENET MED GEMEL
[8]
KARN M N, 1953, Acta Genet Med Gemellol (Roma), V2, P152
[9]
KARN MN, 1952, ANN EUGENIC, V16, P365
[10]
KARN MN, 1952, ANN EUGEN, V17, P233