Masanobu Yamashita

• Hokushi narabini Mōkyō ni okeru shuyō nōsanbutsu no jukyū kankei narabini torihiki jijō chōsa hōkoku
• Hokushi shuyō chikusanbutsu yushutsunyū tōkeihyō
• Mareishia, Muda kangai keikaku chiiki ni okeru suitō nikisaku keiei no jittai