@book{ BA73813921,
 author = "Lomax, John Avery and Lomax, Alan and Kittredge, George Lyman",
 title = "American ballads and folk songs",
 publisher = "Dover Publications",
 year = "1994",
 series = "Dover books on music",
 number = "",
 URL = "https://ci.nii.ac.jp/ncid/BA73813921"
}
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