{"product_id":"9784642071642","title":"境界争いと戦国諜報戦","description":"戦国大名・国衆の戦いは、支配領域の「境目」をめぐって繰り広げられた。地形・地質の特徴を踏まえ、境目の防衛戦略と築城、境目を脅かす忍び（草）の軍勢のゲリラ戦・諜報活動から、合戦の知られざる特質を見抜く。","brand":"吉川弘文館","offers":[{"title":"Default Title","offer_id":48480116113712,"sku":"","price":2420.0,"currency_code":"JPY","in_stock":true}],"url":"https:\/\/www.maruzenjunkudo.co.jp\/products\/9784642071642","provider":"丸善ジュンク堂書店ネットストア","version":"1.0","type":"link"}