Robert W. Frey

• Earth history
• A survey of Indiana geology
• Excursions in southeastern geology
• Excursions in southeastern geology
• Paleoecology and depositional environment of Fort Hays limestone member, Niobrara Chalk (Upper Cretaceous) west-central Kansas
• The Neogene of the Georgia coast
• The study of trace fossils
• The study of trace fossils
• Trace fossils
• Trace fossils of Fort Hays limestone member of Niobrara Chalk (upper cretaceous), west-central Kansas