ISBN 0990415295 books & textbook
Southwest Treasure Hunter's Gem and Mineral Guide (6th Edition): Where and How to Dig, Pan and Mine Your Own Gems and Minerals
Rygle, Kathy J. Pederson, Stephen F. Matlins PG FGA, Antoinette
GemStone Press /2016-04-22 Paperback / 224 Pages
isbn-10: 0990415295 / isbn-13: 9780990415299
