Northwest Treasure Hunter's Gem & Mineral Guide: Where & How to Dig, Pan and Mine Your Own Gems & Minerals (Gem & Mineral Guides to the U.S.A.)

by: Kathy J. Rygle · Stephen F. Pedersen Paperback details (USA). ISBN: 978-0-943763-55-2 ISBN-10: 0-943763-55-X GemStone Press · 2008