Ecology
mobi, epub, pdf |eng | 2008-10-02 | Author:David R. Montgomery
Figure 15. Map of the Piedmont region of the southeastern United States showing the net depth of topsoil eroded from colonial times to i98o (modified from Meade i98z, 241, fig. ...
( Category:
Soil Science
March 25,2014 )
mobi, epub |eng | 2011-09-06 | Author:David Abram
Despite a few thunderstorms last month, this land is dry—too dry. All around my home the piñon pines are desiccating and dying from the deepening drought. Most of the fish ...
( Category:
Cosmology
March 25,2014 )
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