http://dewey.info/scheme/a14/ en
783 Music for single voices    The voice
783.6 Women's voices
http://dewey.info/scheme/a14/ vi
783 Nhạc cho đơn ca    Giọng ca
783.6 Giọng nữ
http://dewey.info/scheme/a14/ it
783 Musica per voci singole    La voce
783.6 Voci femminili
http://dewey.info/scheme/edition/e23/ en
783 Music for single voices
783.6 Women's voices--single voices
783.66 Soprano voices--general works--single voices 783.67 Mezzo-soprano voices--general works--single voices 783.68 Alto voices--women's--single voices
Dewey Decimal Classification
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