Geoscience Research Reports for 1996 (volume 30)
H - PROGNOSIS OF THE OCCURRENCE OF MINERAL RAW MATERIA
Mining old coins - historical document about extract costing metal
Hrazdíra,P., volume 30, 1997 (GRR for 1996), pages 141–142
pdf (0.34 MB)
Mining old coins - historical document about extract costing metal
Hrazdíra,P., volume 30, 1997 (GRR for 1996), pages 141–142
pdf (0.34 MB)