✓

@Book{            book:1003472,
  Author        = "Hartmann, William M.",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  Edition       = "1",
  ISBN          = "978-1-4614-6785-4,978-1-4614-6786-1",
  Publisher     = "Springer-Verlag New York",
  Series        = "Undergraduate Lecture Notes in Physics",
  Title         = "Principles of Musical Acoustics",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=d08120f380d03ce0defec2cec81941d5",
  Year          = "2013",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=d08120f380d03ce0defec2cec81941d5",
  File          = "[William\_M.\_Hartmann\_(auth.)]\_Principles\_of\_Musica(b-ok.xyz) (0) - a - a.pdf"
}

@Book{ book:1003472, Author = "Hartmann, William M.", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", Edition = "1", ISBN = "978-1-4614-6785-4,978-1-4614-6786-1", Publisher = "Springer-Verlag New York", Series = "Undergraduate Lecture Notes in Physics", Title = "Principles of Musical Acoustics", URL = "http://gen.lib.rus.ec/book/index.php?md5=d08120f380d03ce0defec2cec81941d5", Year = "2013", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=d08120f380d03ce0defec2cec81941d5", File = "[William_M._Hartmann_(auth.)]_Principles_of_Musica(b-ok.xyz) (0) - a - a.pdf" }