Provides entries on the physical geography of every country in the world plus other selected locations. Each entry features a relief map depicting the geography of the location plus detailed text that describes its features, climate and vegetation. Entries are formatted with standardized rubrics to facilitate comparison.
Provides in-depth, worldwide coverage of environmental issues. Each article is written in a nontechnical style and provides current status, analysis, and suggested solutions whenever possible. 2 volumes.
Geo-Data: The World Geographical Encyclopedia, 3rd Ed. by 
Environmental Encyclopedia, 4th Ed.
Minnesota underfoot : a field guide to the state's outstanding geologic features by