Keywords: Agricola 6B 131 contrast.png en Illustration of a mining pit Agricola_6B_131 png 50 2012-03-02 10 26 UTC Agricola_6B_131 png Georg Agricula derivative work MichaelFrey <span class signature-talk >talk</span> contrast Agricola_6B_131 png PD-old Original upload log This image is a derivative work of the following images File Agricola_6B_131 png licensed with PD-old 2009-07-01T16 27 16Z Metilsteiner 1324x1447 942441 Bytes <nowiki> en Illustration of a mining pit Georg Agricula De re Metallica Libri XII Georg Agricula 1556 Illustration zu Sechstes Buch S 131 </nowiki> Uploaded with derivativeFX de Illustrations from De re metallica Mining in art History of Ruhla |