International yearbook of education, Vol. XXI, 1959.
International yearbook of education, Vol. XXI, 1959.
- Geneva : Paris : IBE; UNESCO,, 1959.
- 550 p.
- IBE publication ; 212. .
OC 37 (100) =20 "1959" INN Vol. 21
OC 37 (100) =20 "1959" INN Vol. 21