Teikoku tetsudou tokubetsu kaikei ni kansuru kenkyuu

Teikoku tetsudou tokubetsu kaikei ni kansuru kenkyuu

Tetsudou kamotsu tokubetsu chinritsu ni kansuru chousa

Yuri byougai ni kansuru kenkyuu : tokubetsu houkoku

Tokubetsu shikin no shito ni kansuru kenkyuu shian

Gaikoku ni okeru tsuushin jigyou tokubetsu kaikei seido ni kansuru shiryou

Moratoriumu ni kansuru kenkyuu

Gin ni kansuru kenkyuu

Kin ni kansuru kenkyuu

Tokubetsu shohouki ni kansuru hanreitou kenkyuu

Gunjihi ni kansuru kenkyuu

Tennentou ni kansuru kenkyuu

Kaikei keiri ni kansuru kentatsu teikoku zaigou gunjinkai kaikei jimu seiri youryou

Kawase tsuuka kinyuu tetsudoukaikei chihouzaisei ni kansuru kenkyuu

Tokubetsu shisei ni kansuru chousa shiryou

Shinseki tetsudou ni kansuru keiyakusho

Hokuetsu ni okeru tetsudou ni kansuru iken

Denki tousei ni kansuru kenkyuu

Keihi ni kansuru kenkyuu

Kokutei shuushinsho ni kansuru kenkyuu

Nagasaki tetsudou fusetsu ni kansuru kibou

Tetsudou shuyou kamotsu ni kansuru chousa

Inasaku no houkyou ni kansuru kenkyuu

Densenbyou ni okeru meneki ni kansuru kenkyuu

Tetsudou senro no keizai hikaku ni kansuru kenkyuu