TY  - BOOK
AU  - Puffer,Ruth Rice
AU  - Serrano,Carlos V.
ED  - Pan American Health Organization.
TI  - Birthweight, maternal age, and birth order: three important determinants in infant mortality 
SN  - 9275112940
PY  - 1975///
CY  - Washington, D.C.
PB  - Pan American Health Organization
KW  - Infant mortality
KW  - Birth order
KW  - Birth weight
KW  - Maternal age
KW  - Americas
ER  -