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AbstractAb,abs,abstractÎÄÕªAb(Iowa and caucus?),ab(ozone)
AdviserAd,adviser,advisorµ¼Ê¦Ad,(Kani),adviser(Smith,Ann?)
AuthorAu,at,author×÷ÕßAu(Hart,William)
Degree DateDdt,da,date,yr,yearÊÚÓèѧλÈÕÆÚDDT(1996),da(<1990),yr(1980:1990)
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