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I.Introduction Initssixthissueof 1 996SocialSciencesinChinapublishedapaperbyLiShiandB .Gustafssontitled“AnEstimateoftheExtentandSca
I. Introduction Initiatthissue of 1 996 Society Science in Chinapublishedapaperby Li Sihiand B. Gustafssontitled "An Estemate of the Extent and Sca