{"identifier":"nobleid:/w1/20260526/430DF2AB","arkIdentifier":"ark:/48914/w1/20260526/430DF2AB","version":1,"workTitle":"線路部門 業務資料 わかりやすい保線講座(5)線路こう配","workType":"Journal Article","authors":"平山 智博","description":null,"workUrl":null,"existingDoi":null,"createdAt":"2026-05-26T01:16:33.758546Z","canonicalUrl":"https://nobleid.org/ark:/48914/w1/20260526/430DF2AB.v1"}