By Rachel Craft | 1 Comment »
This entry was posted on Friday, February 11th, 2011 at 10:17 am and is filed under .
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Who has copyright for this nice diagram?
Can we get permission to use it in an article on biomass as energy source for our website http://www.infonet-biovision.org used as an information tool for small scale African farmers, schools and service providers?
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+ 3 = four
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