Books by Robert W. Gregory
Rare Earth Elements in Wyoming
Mantle-Derived Breccia Pipes in the Southern Green River Basin of Wyoming, USA
Diamond Exploration Potential of the Wyoming Craton, Western United States, USA
Geology and Geochemistry of the Quaking Asp Mountain and Black Butte silicified zones, Green River Basin
Preliminary study of precious
Preliminary study of precious metals and stones along the Union Pacific Right-of-way of southern Wyoming
Results of coal drilling proje
Results of coal drilling projects in the Bighorn Basin, Wyoming