Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

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Mining old coins - historical document about extract costing metal
P. Hrazdíra, volume 30, 1997 (GRR for 1996), pages 141–142
pdf (0.34 MB)