[Brief contribution to the study of infant mortality in Valera (5-year period 1955-1959)].
D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D007235:Infant, Premature, Diseases
INFANT MORTALITY; INFANT, NEWBORN, DISEASES; INFANT, PREMATURE, DISEASES