Langenstein, Germany. 13th Dec, 2020. Historical photos recall the barrel organ player Ludwig Schmidt and his wife Karoline. The couple lived in one of the cave apartments. Credit: Stephan Schulz/dpa-Zentralbild/ZB/dpa/Alamy Live News
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Rock Schmidt per applicazioni di test su roccia
Meccanica delle rocce e degli ammassi rocciosi - Geoplanning
A) Martello di Schmidt con, a sinistra, il percussore che permette di... | Download Scientific Diagram