国産の国鉄蒸気機関車 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "国産の国鉄蒸気機関車" in Japanese language version.

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70seeds.jp

現役技術者「SLは生き物」戦後を走り抜けたD51との絆

rchs.org.uk

What were the investment dilemmas of the LNER in the inter-war years and did they successfully overcome them? P35The Railway & Canal Historical Society]