3.4 注释及文献

①“TentativeMemorandumforBureauofAgriculturalEconomicsFloodCon-trolSurveyRepresentatives,”March9,1939.(Mimeographed.)②PublicHealthReports,Vols.ⅩⅩⅩⅩⅪⅩ-LⅡ(1934-1938).③Thesedatawerefirstpublishedbytheauthorinthe“SymposiumonFloods,”AmericanGeophysicalUnionTran ......（本文共 1921 字 ）     [阅读本文] >>