20210206231900.0 1884-3271 Japan 1884-3271 http://www.journalarchive.jst.go.jp/japanese/jnltop_ja.php?cdjournal=massspec1953 Shitsuryou bunseki (Online) 1884-3271 Shitsuryo bunseki. Shitsuryo bunseki. Shitsuryou bunseki (Online) 0542-8645 1884-3271