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|All Authors / Contributors:||
Xiaobo Zhang; Shenggen Fan; International Food Policy Research Institute. Environmental and Production Technology Division.
"EPTD Discussion Papers contain preliminary material and research results, and are circulated prior to a full review in order to stimulate discussion and critical comment. It is expected that most Discussion Papers will eventually be published in some other form, and that their content may also be revised."
|Description:||34 p. : ill. ; 28 cm.|
|Series Title:||EPTD discussion paper, no. 71.|
|Responsibility:||Xiaobo Zhang and Shenggen Fan.|