Measuring Method for the Edge and the Wear of Blade of Sickle, Cutter, Mower etc
鎌, カッタ, モアー等の切味について

N. MORITA, N. TAYA
1961 Journal of the Japanese Society of Agricultural Machinery  
doi:10.11357/jsam1937.23.76 fatcat:7ebobsbozndrhlnc7ezi5nxlfe