Birthweight, maternal age, and birth order :
Puffer, Ruth Rice.
Birthweight, maternal age, and birth order : three important determinants in infant mortality / Ruth R. Puffer, Carlos V. Serrano. - Washington, D.C. : Pan American Health Organization, 1975. - 43 p. - Scientific publication (Pan American Health Organization) ; no. 294 .
eng spa.
9275112940
Infant mortality.
Birth order.
Birth weight.
Maternal age.
Americas.
HB 1323.I4
Birthweight, maternal age, and birth order : three important determinants in infant mortality / Ruth R. Puffer, Carlos V. Serrano. - Washington, D.C. : Pan American Health Organization, 1975. - 43 p. - Scientific publication (Pan American Health Organization) ; no. 294 .
eng spa.
9275112940
Infant mortality.
Birth order.
Birth weight.
Maternal age.
Americas.
HB 1323.I4