共 13 条
[1]
[Anonymous], 1982, SAS USERS GUIDE
[7]
HOFFMAN HJ, 1984, SEMIN PERINATOL, V8, P15
[9]
BIRTH WEIGHT AND GESTATION TIME IN RELATION TO MATERNAL AGE, PARITY AND INFANT SURVIVAL
[J].
ANNALS OF EUGENICS,
1951, 16 (02)
:147-&
[10]
KESSNER DM, 1973, INFANT DEATH ANAL MA, P59