Joyce, Theodore J.
Self-selection, prenatal core, and birthweiht among blacks, whites and hispanics in New York City .-- Cambridge [Mass.] : N.B.E.R. , 1990
.--18 p. 22 cm. .-- ( NBER. Working paper ; 3549 ).
Resumen. -- Bibliografía
SALUD PUBLICA
ASPECTOS ECONOMICOS
Self-selection, prenatal core, and birthweiht among blacks, whites and hispanics in New York City .-- Cambridge [Mass.] : N.B.E.R. , 1990
.--18 p. 22 cm. .-- ( NBER. Working paper ; 3549 ).
Resumen. -- Bibliografía
SALUD PUBLICA
ASPECTOS ECONOMICOS