Small 2-part collection of books

Small book bundle in 2 parts, 'Der kleine Brockhaus - Handbuch des Wissens in einem Band' (1925), encyclopedia on various subjects and 'De Re Metallica Libri XII - Zwölf Bücher vom Berg- und Hüttenwesen' by Georg Agricola. With partly colored illustrations and woodcuts. Preservations various, clear signs of age and use.