Tetsudoushou koukuu sokuryou sagyou ni tsuite

Sangyou kaihatsu to koukuu sokuryou

Rekkoku koukuukai no gensei ni tsuite : fu wagakuni koukuu kougyou ni taisuru shoken

Doitsu rikugun ni okeru kinmujou ni tsuite no touki sagyou no rei

Koukuu yuubin no riyou ni tsuite

Futsukoku tetsudou higyou ni tsuite eikoku ni okeru roudou undou no henka ni tsuite

Shotokuzeihou kaisetsu : nougyoukai chokin rishi ni tsuite

Bujun tankou toukyou honkou shuttan sagyou ni tsuite no kenkyuu houkoku

Tetsudou kyouhan souan sokuryou furoku tetsudou sokuryou hojohyou : rikufu dai 394gou

Kokuji no ittei to yokogaki katakana ni tsuite

Koukuu shashin no riyou kachi no chousa ni tsuite

Roudou jikan to kyuusoku jikan no kankei ni tsuite

Bankushiki rinshou ketsueki tou sokuteihou gurikogēn teiryouhou ni tsuite

Nihon koukuu houki zenshuu : furoku koukuu houki ni kansuru jouyaku narabini fuzokusho bassui

Yousangyou no jittai ni tsuite

Keizai teki ni kanou naru sensou no kibo ni tsuite

Honpou semento zaiko risou hoyuuryou ni tsuite

Tetsudoushou ni okeru shouunsou mondai no keika

Shiyou o kotoniseru baai ni okeru kinrousaku no ketsueki shibouryou ni oyobosu eikyou ni tsuite

Aizu toujikigyou ni tsuite no kouwa

Nisshi tetsudou renraku unyu ni tsuite

Maizuru tetsudou kyouto tsuchiyama ryousen tokushitsu hikaku ni tsuite

Shou shoukou gyousha no shikin ni tsuite

Shiyou o kotoniseru baai ni okeru kinrousaku no ketsueki zanyo chissoryou ni oyobosu eikyou ni tsuite

Toushitsushoku eiyou narabini tanpakushitsushoku eiyou no sai ni okeru kinkousaku no kettouryou ni oyobosu eikyou ni tsuite