TY - GEN AU - Tautermannová,M TI - Smiling in infants SN - 0009-3920 PY - 1973///1112 KW - Age Factors KW - Child Development KW - Emotions KW - Facial Expression KW - Humans KW - Infant KW - Infant, Newborn KW - Social Behavior N1 - Publication Type: Journal Article ER -