TY - BOOK AU - Unesco ED - Unesco. TI - The Present situation and trends of research in the field of special education: UNESCO SN - 9231011065 AV - LC 4019 .P73 1973 U1 - 371.9/07/2 PY - 1973/// CY - Paris PB - Unesco KW - Children with disabilities KW - Education KW - Case studies ER -