[The differential classes: significance and scope].
D002648:Child; D002653:Child Behavior Disorders; D004495:Education of Persons with Intellectual Disabilities; D004519:Education, Special; D005260:Female; D006311:Hearing Disorders; D006801:Humans; D007558:Italy; D007859:Learning Disabilities; D008297:Male; D014786:Vision Disorders
Le classi differenziali: significato e scopi.