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Socyberty > Tags > layer
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 | | Onions | | by twistedtree, Apr 1, 2008 | | Are opinions like onions? Find out why.
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 | | Biogas: An Historic Retrospective | | by Henrique, May 13, 2008 | | Biogas and renewable energies in general are very popular due to economic and environmental issues regarding conventional energy sources. In particular, we can state the possible shortage of world fuel reserves, and the negative effects that those conventional sources have on the ozone layer. | | Comments(3) Liked It: 2 |
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