Chiba-ken (Japan). Kikakubu. Tōkeika

• 1980-nen sekai nōringyō sensasu kekka gaiyō
• 1990-nen sekai nōringyō sensasu kekka gaiyō
• 1995-nen nōbyō sensasu kekka gaiyō
• Dai 10-ji gyogyō sensasu kekka hōkokusho
• Dai 5-ji gyogyō sensasu kekka gaiyō
• Nōgyō kihon chōsa no kekka gaiyō
• [Chiba-ken chikuji kankōbutsu