Roo, R. de.
Educational services. - Paris-FR : Unesco, 1967. - p. 272-275 : il. - Trimestral - Vol. XX, no. 4 (1967) - Museum ; no. 4 . - Francia. Unesco. .
Museums of Belgium.
Educational services. - Paris-FR : Unesco, 1967. - p. 272-275 : il. - Trimestral - Vol. XX, no. 4 (1967) - Museum ; no. 4 . - Francia. Unesco. .
Museums of Belgium.