SlideShare.Com seems like YouTube.Com except for Powerpoint and other slides.
The following slideshow by Luc Maene reviews food output versus fertilizer input.
http://www.slideshare.net/ifpri/nourishing-plants-and-people-maene-presentation-19-november-10
Showing posts with label powerpoint. Show all posts
Showing posts with label powerpoint. Show all posts
Wednesday, February 2, 2011
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