CChikyū jidai no NihonjinChikyū jidai no Nihonjin[kōenshū]de Umesao, TadaoMateriasCivilizationRelationsCultural relationsEdiciones (1)Chikyū jidai no Nihonjin (1974)Chūō Kōron Sha · japonésMás obras de Umesao, TadaoMMogōruzoku tankenkiMogōruzoku tankenkiNNihon santoronNihon santoronNNihon to wa nani kaNihon to wa nani ka