EntityQ1077029· pop 15· linked from 48 articlesNihon KōkiSign in to save840 Book by Fujiwara no Otsugu, Minamoto no Tokiwa and Fujiwara no YoshifusaBook · Open LibraryAuthorMorita, TeiFirst published2003Editions2SubjectsHistory, Sourcesvia Open LibraryConnectionsTokyoCityKyotoEntityCategories840s in Japan9th-century history books9th-century Japanese booksHeian period in literatureHistory books about JapanHistory books of the Heian PeriodLate Old Japanese textsNara period