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| 日時 | |
| 関係者(共同研究者) | |
品質管理の歴史1)
品質管理:品質管理の歴史. https://edu.yz.yamagata-u.ac.jp/developer/Asp/Youzan/@Lecture.asp?nLectureID=6317. (参照2023-02-17).
| 西暦 | 令和 | 🔷 平成 | 🔷 昭和 | 🔷 大正 | 🔷 明治 |
|---|---|---|---|---|---|
| 1919 | R-99 | H-69 | S-6 | T8 | M52 |
| 1920 | R-98 | H-68 | S-5 | T9 | M53 |
| 1921 | R-97 | H-67 | S-4 | T10 | M54 |
| 1922 | R-96 | H-66 | S-3 | T11 | M55 |
| 1923 | R-95 | H-65 | S-2 | T12 | M56 |
| 1924 | R-94 | H-64 | S-1 | T13 | M57 |
| 1925 | R-93 | H-63 | S0 | T14 | M58 |
| 1926 | R-92 | H-62 | S1 | T15 | M59 |
| 1927 | R-91 | H-61 | S2 | T16 | M60 |
| 1928 | R-90 | H-60 | S3 | T17 | M61 |
| 1929 | R-89 | H-59 | S4 | T18 | M62 |