A-Ventilatoren. Oranje-Nassau mijnen, Heerlen, beproeving stofkamers. Date of creation11-07-1952CollectionStork photo collection, 1868-1968
A-Ventilatoren. Oranje-Nassau mijnen, Heerlen, beproeving stofkamers. Date of creation11-07-1952CollectionStork photo collection, 1868-1968