Challenge to Reduce the Cost of Main Drain by Applying Enhanced Supplementary Drains and Subsoil Breaking
営農排水技術の高度化による本暗渠工低コスト化の可能性

Katsumi CHIBA, Hideaki KANMURI, Ikuo IWASA, Kiyoshi KOGA
2005 Journal of the Agricultural Engineering Society, Japan  
doi:10.11408/jjsidre1965.73.7_573 fatcat:627frdhcjreejcn2u4kddx5hqi