Discussion : On the Three-dimensional Impeller with Loxodromic Curve Blade TOKUNAGA Masayoshi 一般社団法人日本機械学会 Bulletin of JSME 00213764 24 189 599 600 1981-03 1981-03 110002359513 AA0058509X ENG NII-ELS 3 Discussion : On the Three-dimensional Impeller with Loxodromic Curve Blade TOKUNAGA Masayoshi The Japan Society of Mechanical Engineers Bulletin of JSME TOKUNAGA Masayoshi Osaka University