9Tuan Francis C,Zhang Xiaohui,Eric Wailes.China’s pork economy:Production,marketing,foreign trade and consump-tion. International Agricultural and Trade Report:China,Situation and Outlook Series,WRS-98-3 . 1998
10Wailes Eric J,Zhang X,Cao L,et al.China’s livestock feed use relationships:Preliminary results from a survey in sevenprovinces. WRC Workshop . 1998
