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@Book{            book:28962,
  Author        = "W., Sierpinski",
  date-added    = "2020-04-10 19:46:35 +0200",
  date-modified = "2020-04-10 19:46:35 +0200",
  Edition       = "2 revised",
  Title         = "Cardinal and ordinal numbers",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=0225536772218b7905448fb934fd539e",
  Year          = "1965",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=0225536772218b7905448fb934fd539e",
  File          = "Cardinal and ordinal numbers by Sierpinski W. (z-lib.org) - a.pdf",
  file-2        = "Cardinal and ordinal numbers by Sierpinski W. (z-lib.org) - a.djvu"
}

@Book{ book:28962, Author = "W., Sierpinski", date-added = "2020-04-10 19:46:35 +0200", date-modified = "2020-04-10 19:46:35 +0200", Edition = "2 revised", Title = "Cardinal and ordinal numbers", URL = "http://gen.lib.rus.ec/book/index.php?md5=0225536772218b7905448fb934fd539e", Year = "1965", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=0225536772218b7905448fb934fd539e", File = "Cardinal and ordinal numbers by Sierpinski W. (z-lib.org) - a.pdf", file-2 = "Cardinal and ordinal numbers by Sierpinski W. (z-lib.org) - a.djvu" }