Can we observe spontaneous smiles in 1-year-olds?

Autor:	Kawakami, Fumito, Kawakami, Kiyobumi, Tomonaga, Masaki, Takai-Kawakami, Kiyoko
Zdroj:	In Infant Behavior and Development 2009 32(4):416-421
Databáze:	ScienceDirect
Externí odkaz:	Zobrazit plný text záznamu Full Text from ScienceDirect