Geographic, geologic, and hydrologic summaries of intermontane basins of the northern Rocky Mountains, Montana

Natural regions of the United States and Canada

Creation of the sacred : tracks of biology in early religions

The historical atlas of the earth : a visual exploration of the earth's physical past

Physical and hydrologic properties of rock outcrop samples at Yucca Mountain, Nevada

Everyday science explained

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,