Project Gutenberg
2004-07-01
Public domain in the USA.
80
Marsh, George P. (George Perkins)
1801
1882
Marsh, G. P. (George Perkins)
The Earth as Modified by Human Action
Produced by Steve Harris, Charles Franks and the Online Distributed Proofreading Team
en
Human geography
Physical geography
Conservation of natural resources
Nature -- Effect of human beings on
GF
Text
Browsing: Environmental Issues
Browsing: Nature/Gardening/Animals
Browsing: Travel & Geography
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