About FUJITA M
About Japan Railway Construction Public Corp., Tokyo
About NISHIMURA T
About Japan Railway Construction Public Corp., Tokyo
About KITAMURA A
About Japan Railway Construction Public Corp., Tokyo
About Tunnelling 82
About Japan
About 各種トンネル【’81~’92】
About トンネル掘削と工事用機械・設備【’81~’92】
About 日本
About 青函トンネル