title: A longitudinal study of infant vocalization in the first year.
authors: B W
authors: BW
authors: Camp
authors: D
authors: D
authors: Burgess
authors: L J
authors: LJ
authors: Morgan
authors: G
authors: G
authors: Zerbe
mesh_terms: D000293:Adolescent; D000328:Adult; D002657:Child Development; D002663:Child Language; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D008137:Longitudinal Studies; D008297:Male; D008423:Maternal Age; D009034:Mother-Child Relations