This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Zinc syteme belge. Four belge pour l'extraction du zinc dtail Image scanne dans Dictionnaire de chimie industriel Barreswil Girard tome page Belgium oven for the extraction of zinc close up Picture scanned in Dictionnaire de chimie industriel Dictionary of industrial chemistry Barreswil Girard tome page Dictionnaire de chimie