9780607657968 (1 Ergebnisse)

Zustand: very good. from the abstract, "Man most likely first obtained gold from placer deposits more than 6,000 years ago. Placers account for more than two-thirds of the total world gold supply, and roughly half of that mined in the States of California, Alaska, Montana, and Idaho." softcover, 11" x 8.5", 19 pages, illustrated…