Term Definition
Reynolds 2008

Raynolds, Robert G., ed. 2008. Roaming the Rocky Mountains and Environs: Geological Field Trips. Field Guide 10. Boulder, CO: Geological Society of America.

Rocky Mountain News 1994

Rocky Mountain News. 1994. Vanishing Colorado. Denver, CO: Rocky Mountain News.

Roderick 1964

Rodeck, Hugo G., ed. 1964. Natural History of the Boulder Area. Leaflet No. 13. Boulder, CO: University of Colorado Museum.