1. Jasperoids of the Lake Valley mining district, New Mexico : application of criteria for recognition of ore-associated jasperoids has revealed a new potentially mineralized area in a famous silver mining district Author/Creator: Young, Edward J. 1923- (Edward Joseph), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1966 Resource Type: Book Access & Availability: Loading
2. Jasperoid in the United States : its characteristics, origin, and economic significance Author/Creator: Lovering, T. G. 1921-1996, (Tom Gray), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1972 Resource Type: Book Access & Availability: Loading
3. Jasperoids of the Pando Area, Eagle County, Colorado Author/Creator: Lovering, T. G. 1921-1996. (Tom Gray) Publication/Creation: Washington : U.S. Govt. Print. Off, 1980 Resource Type: Book Access & Availability: Loading
4. Jasperoids of the Pando Area, Eagle County, Colorado Author/Creator: Lovering, T. G. 1921-1996, (Tom Gray), author Publication/Creation: [Reston, Va.] : United States Department of the Interior, Geological Survey, 1980 Resource Type: Book Access & Availability: Loading