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A practical treatise on mine engineering (1855)
Greenwell, G.C · Lambert · leaf 255
PEATS 54 / /,/ . / i ) A / vy . 2 . FRONT V/EW END V/EW FRONT V/EW Roo / Roof Root ' … Lmtthi ' r/f } ' / . //A . Pair ' d stir < V . R . ( ' rcct/HvR i/f/ . / # • ) . ' } .Bergbautechnik
e-rara · ETH-Bibliothek · No known copyright restrictions. Free to use for anything.
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