There has been data ("光と電磁気 ファラデーとマクスウェルが考えたこと 電場とは何か? 磁場とは何か? (ブルーバックス)") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Tue Jun 18 16:49:54 2019, so the data displayed here has been removed .