Haruo Watanabe

• Māsharu shotō Nanpō suisan chōsasho
• Ranryō Higashi Indo suisangyō chōsasho
• Soto Nanʼyō hōjin suisangyō
• Yasai tō no nōsuisanbutsu kara no osen biseibutsu tō no kenshutsuhō ni kansuru chōsa kenkyū