Soil Carbon in Grazing Lands: What's been done and we need to do and Highlights from Nitrogen Efficiency Study in Cropping Systems
Taming the Dragon: Reducing the Climate Impact of the Transportation System
La Crosse ASHRAE Meeting December 9, 2008 Larry Butz GEA Consulting Environmental Update.
Uncertainties in absolute attribution of climate change SB-24 17 May 2006
