Nihon sekiyu shi

Nihon sekiyu kabushiki gaisha

Nihon sekiyushi

Nihon sekiyushi

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

Nihon sekiyu kabushiki gaisha jigyou youran : fu sekiyugyou ippan

Sekiyu

Nihon bijutsuin shi

Nihon bengoshi shi

Nihon yuibutsuron shi

Nihon seikoukai shi

Sekiyu kougyou

Sekiyu kokusaku

Sekiyu benran

Sekiyu benran

Sekiyu benran

Sekiyu benran

Sekiyu benran

Sekiyu chishitsugaku

Sekiyu seisenki

Sekiyu chishitsugaku

Sekiyu shikenhou

Nihon shokuen kaisou shi

Nihon shouhi kumiai shi

Nihon housou kyoukai shi