Posted by: lfc123 March 2, 2006
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here are some more sites
http://www.energybulletin.net/5173.html
this page has links to all kinds of info about food production. i think it will be helpful
http://agrifor.ac.uk/browse/cabi/fa8a9d937f48f5782e03cd57d88bc044.html
http://www.biotech-info.net/production_population.html