Hakukoku ni okeru doitsu no shisei ni kansuru chuuritsukokujin no shokan oyobi dokugun ga hakukoku nite okashitaru zangyaku ni kansuru sakisoniaou no kyoudai matsukusu do zatsukusu shinnou no shougen

Doitsu no ginkou ni kansuru chousa

Doitsu no ginkou ni kansuru chousa

Doitsu no ginkou ni kansuru chousa

Doitsu ni okeru kokugo undou : gairaigo mondai ni kansuru

Doitsu kokunai kaku toshi no shougakkou ni okeru kokugo kyouiku ni kansuru houkoku

Shisei sensakei no dainamikusu ni kansuru kenkyuu

Wagakuni no shinsai ni taisuru shogaikoku no doujou to shinsai ni kansuru shomeishi no shokan

Nihon no kokumin ni kansuru kousatsu nihon no kokutai ni kansuru kannen

Doitsu shokuminchi no bokoku ni taisuru keizai kankei

Eikoku no kokusai ni kansuru chousa

Eikoku no kokusai ni kansuru chousa

Eikoku no kokusai ni kansuru chousa

Hokou robotto no saitekika hokou shisei ni kansuru kenkyuu

Oogata uchuu kouzoubutsu no shisei seigyo ni kansuru kenkyuu

Shouyaku byakukyuu no seibun ni kansuru kenkyuu

Tamogitake no rekuchin oyobi kanrensuru tanpakushitsu ni kansuru kenkyuu

Kokusai ni kansuru toumen no shomondai

Sansengo no beikoku ni kansuru houkoku

Furittsu teissen no shokan : nachi shunoubu ni ateta zen doitsu koutetsuou no tegami

Nihon teikoku no sekiyu jigyou : fu sekiyu koudoubori ni kansuru shokan

2soku hokou robotto no shisei seigyo ni kansuru kiso kenkyuu

Doitsu ni okeru kakaku kankei no shomondai

Nagoyashi ni okeru shougyou shokan ni kansuru chousa kenkyuu

Genshi no soukan ni kansuru kenkyuu