Sekiyu sekitan gasu ni kansuru kenkyuu

Gasu oyobi sekiyu kikan

Sekiyu senbai ni kansuru kenkyuu

Sekitan ni kansuru chousa

Sekiyu gasu choryuu tansanenganchuu no muki biryou seibun ni kansuru kenkyuu

Sekiyu ni kansuru chousa

Moratoriumu ni kansuru kenkyuu

Gin ni kansuru kenkyuu

Kin ni kansuru kenkyuu

Sekitan oyobi gasu bunseki houkoku

Gunjihi ni kansuru kenkyuu

Tennentou ni kansuru kenkyuu

Sekiyu tousei ni kansuru shiryou

Kitakarafuto sekiyu riken ni kansuru shiryou

Ryuudousou sekitan gasukaro no sukēruappu ni kansuru kenkyuu

Sekitan ekika purosesu no youzai sekkei ni kansuru kenkyuu

Doitsu sekitan keizai tousei ni kansuru houritsu

Denki tousei ni kansuru kenkyuu

Shouyu jouzou ni kansuru kenkyuu seiseki isan

Gasu jigyou torishimari ni kansuru fukenrei oyobi jigyou keiei ni kansuru kyoka jouken

Doitsu ni okeru sekitan kougyou tousei ni kansuru chousa

Doitsu ni okeru sekitan kougyou tousei ni kansuru chousa

Sekitan gasuka fukugou hatsuden kanshiki gasu seisei ni okeru kouon seramikku firuta ni kansuru kenkyuu

Keihi ni kansuru kenkyuu

Kokutei shuushinsho ni kansuru kenkyuu