Petoskey Stone Finding, Identifying, and Collecting Michigan's Most Storied Fossil Lynch Dan R. Innbundet / 2019 / Engelsk
Petoskey Stone Finding, Identifying, and Collecting Michigan's Most Storied Fossil Lynch Dan R. Heftet / 2019 / Engelsk
Turquoise Identifying and Collecting the Southwest's Iconic Gemstone Lynch Dan R. Heftet / 2025 / Engelsk
Crystal Healing The Science and Psychology Behind What Works, What Doesn't, and Why Lynch Dan R. Heftet / 2021 / Engelsk
