"Y. Toyama" . . "ヨシアキ" . "Yoshiaki Toyama" . "Yoshiaki"@en . . . "Yoshiaki Toyama"@en . "ヨシアキ トヤマ" . "芳昭 〓山" . "芳昭 戸山"@ja-JP . "〓山" . "戸山" . "戶山" . . . "1950" . "戶山芳昭" . "トヤマ" . . "芳昭 戶山" . "戶山芳昭" . . "Toyama"@en . "戶山芳昭" . "芳昭" . . .