@book{ BA78513572,
  author    = "長岡, 克行 ",
  title     = "ルーマン/社会の理論の革命 = Niklas Luhmann--Eine Revolution der Gesellschaftstheorie",
  publisher = "勁草書房",
  year      = "2006",
  URL       = "https://ci.nii.ac.jp/ncid/BA78513572"
}