Classificazione LCTN263.W72
T. Technology
⮑ TN1-997. Mining engineering. Metallurgy
⮑ TN263-271. Mineral deposits. Metallic ore deposits.
Opere scelte (448 totale)
- Gold! Gold! How and Where to Prospect for Gold (Prospecting and Treasure Hunting) di Joseph F. Petralia
- Looking for Gold: The Modern Prospector's Handbook (Prospecting and Treasure Hunting) di Bradford Angier