[ { "title" : "競争戦略論〈1〉", "isbn" : "4478200505", "date" : "2004-09-11T11:11:19.000Z", "publisher" : "ダイヤモンド社", "authors" : "マイケル・E. ポーター", "categories" : "", "score" : "", "comment" : "" } ]
