Nihon Bōeki Shinkō Kikō. Nōrin Suisan Chōsaka

• "Chūgoku Kohoku-shō Bukan-shi ni okeru Nihon shokuhin māketto" ni kansuru chōsa
• Beikoku ni okeru nihonshu shijō no dōkō to shokisei
• Beikoku shokuhin shijō ni okeru Nihon shokuhin ni kansuru chōsa
• Doitsu ni okeru Nihon shokuhin fukyū kanōsei chōsa
• Furansu ni okeru nihonshoku, shokuzai fukyū no genjō oyobi shijō kakudai kanōsei