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@Book{            book:10712,
  Author        = "Rademacher, Hans and Toeplitz, Otto",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  ISBN          = "9780486262420,0486262421",
  Publisher     = "Dover Publications",
  Series        = "Dover Books on Mathematical and Word Recreations",
  Title         = "The enjoyment of mathematics",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=45058BE8593CFFF577F7E5D7CD378CC8",
  Year          = "1990",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=45058BE8593CFFF577F7E5D7CD378CC8",
  File          = "[Hans\_Rademacher,\_Otto\_Toeplitz]\_The\_enjoyment\_of\_(b-ok.xyz) (0) - a - a.djvu",
  file-2        = "[Hans\_Rademacher,\_Otto\_Toeplitz]\_The\_enjoyment\_of\_(b-ok.xyz) (0) - a - a.pdf"
}

@Book{ book:10712, Author = "Rademacher, Hans and Toeplitz, Otto", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", ISBN = "9780486262420,0486262421", Publisher = "Dover Publications", Series = "Dover Books on Mathematical and Word Recreations", Title = "The enjoyment of mathematics", URL = "http://gen.lib.rus.ec/book/index.php?md5=45058BE8593CFFF577F7E5D7CD378CC8", Year = "1990", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=45058BE8593CFFF577F7E5D7CD378CC8", File = "[Hans_Rademacher,_Otto_Toeplitz]_The_enjoyment_of_(b-ok.xyz) (0) - a - a.djvu", file-2 = "[Hans_Rademacher,_Otto_Toeplitz]_The_enjoyment_of_(b-ok.xyz) (0) - a - a.pdf" }