1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States (U.S. Geological Survey circular)
Publisher: U S Geological Survey
Published: June 1999
Language: eng
Format: Paperback
Number of pages: 21
ISBN-13: 9780607951110
Subjects: Mines and mineral resources; Ore-deposits; United States; Science/Mathematics