[Course of sibling relations in the first 2 years].
D001722:Birth Order; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010553:Personality Development; D012801:Sibling Relations; D012951:Socialization
Der Verlauf der Geschwisterbeziehung während der ersten beiden Jahre.