Author: Heizer, Robert F. MNG Mines and quarries of the Indians of California. California Division Of
This agate book has been compiled to help rockhounds to “think like an agate.” Information and
The beauty of banded agates: An exploration of agates from eight major worldwide sites Author: Carlson,
This book always was and has become a masterpiece of Agates and Jaspers. Author: Gibbs, Ron