Harjaantumisopetus : Education for the severely and profoundly mentally retarded students : 2, Nykytila ja kehittäminen = Present stage and development
Harjaantumisopetus : Education for the severely and profoundly mentally retarded students : 2, Nykytila ja kehittäminen = Present stage and development
Harjaantumisopetus : Education for the severely and profoundly mentally retarded students : 2, Nykytila ja kehittäminen = Present stage and development
Harjaantumisopetus : Education for the severely and profoundly mentally retarded students : 2, Nykytila ja kehittäminen = Present stage and development