title: [A method of studying the behavior of a child during the 2d and 3d year of life].
mesh_terms: D001525:Behavioral Sciences; D002652:Child Behavior; D002675:Child, Preschool; D004562:Electrocardiography; D004576:Electromyography; D006801:Humans; D007223:Infant; D008722:Methods; D012129:Respiratory Function Tests
vernacular_title: K metodike issledovaniia povedeniia rebenka vtorogo i tret'ego goda zhizni.