158/4.M.5.b: Subsector porfier/ porphyre

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Raadpleegbaarheid:Het archief is consulteerbaar mits toestemming van de verantwoordelijke archivaris.
Reference code:158/4.M.5.b
Level of description:bestanddeel
By: Algemene Centrale (AC)
Date:1947-1997
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  • 158/4.M.5.b

Link to refer to this record in footnotes, bibliographies etc.:
https://hdl.handle.net/10796/9EE4F5AC-0FD2-4BAD-808B-CE610FEEC48C