Wearing Tests of Tines of the Power Tillers (I)
動力耕耘機の耕耘爪・材質の磨耗に関する研究 (第1報)

H. SUGI
1956 Journal of the Japanese Society of Agricultural Machinery  
doi:10.11357/jsam1937.18.85 fatcat:dwjrkhtko5cbjgedoi35fok6pm