7000► General, history and biography [for rangaku and yōgaku see 7018]
—.10: Earliest and premodern
—.20: Nara period (645-794)
—.30: Heian period (794-1185)
—.40: Kamakura period, Yoshino (1185-1392) and Chūsei in general (1185-1600)
—.50: Muromachi, Ashikaga, Sengoku and Azuchi-Momoyama periods (1392-1615)
—.60: Kinsei, Edo, Tokugawa period, early modern (1600-1867)
—.70: Kindai (1850s- ), bakumatsu, Meiji, Taishō
—.80: Gendai (1926- ), Shōwa period, 20th century
—.90: Postwar Shōwa (1945- ), Heisei period (1989- ), contemporary
7001►
7002►
7004►
7005►
7006►
7009►
7018► General and history
--.10: Mathematics
--.20: Astronomy
--.30: Physics
--.40: Chemistry
--.50: Biology (including botany and zoology)
--.60: Medicine
--.70: Engineering and technology
--.80: Military science
--.90: Others
7100► General [for rangaku and yōgaku see also 7018]
7120► Earth, geodesy, cartography [see also 3407]
7130► Chronology, horology and calendars [aslo see 3006.10]
7200► General [for rangaku and yōgaku see also 7018]
7210► Weights and measures
7270► Nuclear sciences
7290► Applied physical sciences [engineering]
7300► General [for rangaku and yōgaku see also 7018]
7390► Applied chemical sciences and alchemy
7400► General [for natural history see 7520; for rangaku and yōgaku see also 7018] [vulcanos, earthquakes, tsunami]
7410► Geology by region [division by table 2 Japan]
7450► Meteorology [typhoons, ...]
7490► Applied geological sciences
7500► General [for rangaku and yōgaku see also 7018]
7510► Ecology (general) [views on, treatment of and relation to nature]
7520► Natural history and paleontology
7530► Botany [for bonsai and ikebana see 6877ff]
7550► Zoology
7570► Physical anthropology, human biology [for ethonology see 2200, for ethnography and cultural anthropology see 4100]
7590► Biological and agricultural technology
7700► General
[pathology, internal medicine surgery, opthamology, otology, rhinology, laryngology, dentistry, gynaecology, obsttrics, pediatrics, ...]
7987► Psychotherapy, healing, faith cure
7989► Traditional (Chinese) medicine and treatment
7990►
7991►
7992►
7993►
7994►
7995►
7996►
7997►