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@Book{            KuratowskiMostowskia,
  Author        = "Kuratowski, Kazimierz and Mostowski, Andrzej",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  Keywords      = "set theory and descriptive set theory",
  Publisher     = "North-Holland",
  Title         = "Set Theory with an introduction to descriptive set theory",
  Year          = "1976",
  File          = "Set Theory with an introduction to descriptive set theory - Kuratowski, Mostowski (0) (0) - a - a.pdf",
  file-2        = "Set Theory with an introduction to descriptive set theory - Kuratowski, Mostowski (0) (0) - a - a.djvu"
}

@Book{ KuratowskiMostowskia, Author = "Kuratowski, Kazimierz and Mostowski, Andrzej", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", Keywords = "set theory and descriptive set theory", Publisher = "North-Holland", Title = "Set Theory with an introduction to descriptive set theory", Year = "1976", File = "Set Theory with an introduction to descriptive set theory - Kuratowski, Mostowski (0) (0) - a - a.pdf", file-2 = "Set Theory with an introduction to descriptive set theory - Kuratowski, Mostowski (0) (0) - a - a.djvu" }