Laboratory manual in physical geology

The magic school bus inside the Earth

Natural regions of the United States and Canada

Holocene deformation history of the Yellowstone caldera at Yellowstone Lake inferred from abandoned shorelines and sediments

Tell me why

Dictionary of philosophy and psychology, including many of the principal conceptions of ethics, logic, aesthetics, philosophy of religion, mental pathology, anthropology, biology, neurology, physiology, economics, political and social philosophy, philology, physical science, and education, and giving a terminology in English, French, German, and Italian,