1. periodGeology
2. Nihon Shoki (second oldest work of Japanese history, compiled in 720 CE); Nihongi; Chronicles of JapanAbbreviation, See also 日本書紀
3. Kii (former province located in present-day Wakayama and southern Mie prefectures)Abbreviation, Historical term
4. System (stratigraphy)A system in the natural sciences and stratigraphy is an idealized composite unit of the geologic record made up of a succession of rock layers that were laid down together within a certain corresponding geological time span, and are used in turn to date things to a certain corresponding geologic period.
Read “System (stratigraphy)” on English Wikipedia
Read “紀” on Japanese Wikipedia
Read “System (stratigraphy)” on DBpedia
Read “System (stratigraphy)” on English Wikipedia
Read “紀” on Japanese Wikipedia
Read “System (stratigraphy)” on DBpedia
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