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Perfecto, Ivette, John Vandermeer and Angus Wright. 2009. Nature’s Matrix: Linking Agriculture, Conservation and Food Sovereignty, pp. 40‐43. London: Earthscan.
Perfecto, Ivette, John Vandermeer and Angus Wright. 2009. Nature’s Matrix: Linking Agriculture, Conservation and Food Sovereignty, pp. 40‐43. London: Earthscan.
