"Kind." . . "Managing the difficult child"@en . . . . . . "Managing the difficult child : a practical handbook for effective care and control"@en . "Managing the difficult child : a practical handbook for effective care and control" . . . . . . "Managing the difficult child a practical handbook for effective care and control"@en . . . . . . . . . . . . . . "Erziehung." . . "Verhaltensstörung." . .