Ecology

Dinosaurs, with Special Reference to the American Museum Collections

Essays of a Biologist

Balanced Interactions

Dragons of the Air: An Account of Extinct Flying Reptiles

Balanced Interactions

Eco Self

Oceans Society

Drop by Drop

The Climate Change Hoax: The Global Warming Deception

Bye Bugs Naturally

Summary and Analysis of The Lost City of the Monkey God: A True Story

Popular Books on Natural Science

Animal Parasites and Messmates

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida