Nagoya Kōtō Shōgyō Gakkō. Sangyō Chōsashitsu

• Honpō bōsekigyō keiei chōsa
• Honpō nōsanbutsu no seisanryō shisū ni tsuite
• Honpō seisan sūryō shisū sōran
• Honpō tōjiki kōgyō chōsa
• Honpō yōmō kōgyō no chōsa kenkyū
• Keiki junkan no chōsa kenkyū