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China – Minerals, Sites, Deposits, B. Ottens
The uranium of Menzenschwand, Markl G. & Wolfsried S.
Mineral Kingdom Eifel, B. Engelhaupt & W. Schüller
China – Minerals, Sites, Deposits, B. Ottens (red leather binding)
India – The secondary minerals from the Deccan Volcanic Province, B. Ottens
China 2, Berthold Ottens
Greece, B. Ottens & P. Voudouris
Mogok Myanmar, Key R.
The minerals by Hagendorf, Kastning J. & Schlüter J.
The Mineralogical Collection of the Freiberg Mining Academy, Hofmann F.
The Minerals of the Black Forest, Walenta K.
The Minerals and Deposits of Sweden, Wilke
The Crystal Seekers – Volume 1, Kandutsch G. & Wachtler M.
The Crystal Seekers – Volume 2, Kandutsch G. & Wachtler M.
Cleaning and storing minerals, Duthaler R. & Weiß St.
Mineral deposits in the eastern Harz Mountains, Vollstädt, Weiß
Mineral identification using simple chemical and physical methods
