International Food Policy Research Institute (IFPRI) at Washington, D. C., U. S. A.
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2010 ◽
Vol 38
(10)
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pp. 1473-1485
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2000 ◽
Vol 12
(7)
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pp. 1049-1050
2012 ◽
Vol 44
(3)
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pp. 601-602
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