Book (Practical) Railroad August 2021 : Design Standards for Railway Structures, etc., and the same explanation : Tunnel and 削編 Open Railways in general
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: 単行本(実用) 鉄道 令和3年8月 鉄道構造物等設計標準・同解説 トンネル・開削編 鉄道全般