ISBN 0990415287 books & textbook
Northwest Treasure Hunter's Gem and Mineral Guide (6th Edition): Where and How to Dig, Pan and Mine Your Own Gems and Minerals (Treasure Hunter's Gem & Mineral Guides)
Rygle, Kathy J. Pedersen, Stephen F. Matlins PG FGA, Antoinette
GemStone Press /2016-04-22 Paperback / 208 Pages
isbn-10: 0990415287 / isbn-13: 9780990415282
