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@Book{            book:881206,
  Author        = "Mundici, Daniele",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  ISBN          = "8847023602,9788847023604",
  Publisher     = "Springer",
  Series        = "UNITEXT / La Matematica per il 3+2",
  Title         = "Logic: a Brief Course",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=025e05fdfad683ea5eb4d552cda32bb2",
  Year          = "2012",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=025e05fdfad683ea5eb4d552cda32bb2",
  File          = "Logic - A Brief Course - a - a - a - a.pdf"
}

@Book{ book:881206, Author = "Mundici, Daniele", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", ISBN = "8847023602,9788847023604", Publisher = "Springer", Series = "UNITEXT / La Matematica per il 3+2", Title = "Logic: a Brief Course", URL = "http://gen.lib.rus.ec/book/index.php?md5=025e05fdfad683ea5eb4d552cda32bb2", Year = "2012", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=025e05fdfad683ea5eb4d552cda32bb2", File = "Logic - A Brief Course - a - a - a - a.pdf" }