Manuel du Minéralogiste
Johann Jakob Ferber
Nachricht von dem Anquicken der gold-und
Nachricht von dem Anquicken der gold-und silberhaltigen Erze---
Travels Through the Bannat of Temeswar,
Travels Through the Bannat of Temeswar, Transylvania, and Hungary, in the Year 1770. Described in a Series of Letter to Prof. Ferber, on the Mines and Mountains of These Different Countries
