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A practical treatise on mine engineering (1855)
Greenwell, G.C · Lambert · leaf 282
PLATE 61 … Lamberts ’ l . i/A . Xeurasfle ft . f ' - GrrmuffTt * del . / & S4 -Bergbautechnik
e-rara · ETH-Bibliothek · No known copyright restrictions. Free to use for anything.
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