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[文献書誌] Tadauchi, O., H-l.Xu: "A revision of the subgenus Taeniandrena of the genus Andrena of eastern Asia (Hymenoptera, Andrenidae)"Esakia. 43. 65-95 (2003)
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[文献書誌] Dawut, A., O.Tadauchi: "A systematic study of the subgenus Seladonia of the genus Halictus in Asia (Hymenoptera, Apoidea, Halictidae) IV"Esakia. 43. 97-131 (2003)
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[文献書誌] Tadauchi, O., H-l.Xu: "The subgenus Cordandrena of the genus Andrena newly recorded from eastern Asia, with a new species (Hymenoptera, Andrenidae)"Esakia. 44(In press). (2004)
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[文献書誌] Tadauchi, O.et al.: "On image database file TOBIKOBACHI based on the Japanese Encyrtid wasps"Esakia. 43. 51-56 (2003)
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[文献書誌] Tadauchi, O., H.Inoue: "On e-Learning : The WebCT system in the teaching of entomology"Esakia. 43. 57-63 (2003)
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[文献書誌] Kamitani, S., A.Matsunaga: "Estimation of true species richness of leafhopper (Homoptera : Cicadellidae)"Esakia. 43. 43-49 (2003)