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Terra preta - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Terra_preta

terra preta wikipedia good2go biochar fertile biodiverse biodiversity stable

shared by Mark Vickers on 26 Jan 11 - Cached

YouTube - The Promise of Biochar - Part 1 - 0 views

www.youtube.com/watch

biochar documentary terra preta youtube research crop

shared by Mark Vickers on 27 Jan 11 - No Cached

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