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		| Valerien O. Pede | 
	
		| Economist, International Rice Research Institute | 
	
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		| DAPO Box 7777 | 
	
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		| Metro Manila, | 
	
		| Philippines | 
	
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		| v.pede@cgiar.ort | 
	
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		| JEL Areas: Q : Agricultural and Natural Resource Economics
 Q0 : Agricultural and Natural Resource Economics; Environmental and Ecological Economics: General
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